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Question 237680: 3x3x^2+7=0

3x^2+2x-7=0

x=-2+or-sqrt2^2-4(3)(-7)/2(3)
x=-2+or-sqrt4+84/6
x=-2+or-sqrt88/6
I am stuck at this point do I break the radicand 4*22?

Thank you,

Tina
Click here to see answer by Earlsdon(6294)

Question 237695: A)find the quadratic function that models data as a function of x, the number of weeks.
weeks- 0,1,2,3,4,5,6
#- 585,582,629,726,873,1070,1317
B) use the model to estimate the number at 8 weeks

Click here to see answer by Edwin McCravy(8999)

Question 237737: (t-5)^2=2(5-t)
Click here to see answer by jim_thompson5910(28715)

Question 237794: Solve using the qudratic equation.
w+4sqrt(w)-12=0
Click here to see answer by solver91311(17077)

Question 237794: Solve using the qudratic equation.
w+4sqrt(w)-12=0
Click here to see answer by stanbon(57967)

Question 237819: Solve qudratic equation.
(x^2-7)^2+3(x^2-7)+2=0
Click here to see answer by solver91311(17077)

Question 237914: how do you graph y>x^2
Click here to see answer by Alan3354(31528)

Question 238053: anna weighs 3kg more than her sister and their total weight is 105kg,what is the weigth of each girl
Click here to see answer by alicealc(281)

Question 238110: please show how to solve t squared minus seventeen equals 2t
Click here to see answer by Theo(3504)

Question 238380: b. The total area is 110 m2. Write an equation to find x

c. Solve the equation by completing the square.
Click here to see answer by rapaljer(4667)

Question 238424: Determine the values of p for which one root of the equation
x2 - 12x + p = 0 (x2 = x squared)
is 2 more than the other root.
Many thanks.
Walker
Click here to see answer by jsmallt9(3296)

Question 238524: X² = 18 -7x

Click here to see answer by nyc_function(2733)

Question 238378: Hi,
Can you please help me with this problem?
Find the dimensions of a rectangle whose perimeter is 46m and whose area is 126m.
Also
The length of a rectangle is 8 cm greater then its width. Find the dimensions if its area is 105 cm
We need to solve it using quadratics and possibly using factoring!
Click here to see answer by ankor@dixie-net.com(15746)

Question 238656: I need help to figure out the x. the problem is

Click here to see answer by jim_thompson5910(28715)

Question 238589: At a given time of day, the ratio of the height of an object to the length of its shadow is the same for the objects. If a 5ft post casts a shadow of 1.2ft. find the length of the shadow for a 17ft post.
Click here to see answer by rfer(12730)

Question 238747:
4xsquare -49=0
(2x-7)(2x-7)=0
2x-7=0 2x-7=0
2x=7 2x=7
Click here to see answer by Alan3354(31528)

Question 237945: 3(y2+3)=28y
Click here to see answer by College Student(505)

Question 238887: 9991 as a difference of two numbers each of which are perfect squares
Click here to see answer by kunwarmanojsingh(1)

Question 238897: factors of t^4-81
Click here to see answer by JimboP1977(308)

Question 238897: factors of t^4-81
Click here to see answer by Alan3354(31528)

Question 238068: 2X^2+5X-7=0
Click here to see answer by College Student(505)

Question 238896: factors of t^4-81
Click here to see answer by unlockmath(1614)

Question 238969: 50x(squared)=200
Please show us how to solve for "X" by using factoring.
Thank You
Click here to see answer by Alan3354(31528)

Question 238974: use the quadratic formula to solve the equation.
x^2-5x=-9
The solution set is
Click here to see answer by Edwin McCravy(8999)

Question 239003: Winter Wheat question: WHile finding the amount of seed needed to plant his three square wheat fields, Hank observed that the side of one field was 1 Kilometer longer than the side of the smallest field and that the side of the largest field was 3 kilometer longer than the side of the smallest field. If the total area of the three fields is 38 square kilometers, then what is the area of each field?
x^2+(x+1)^2=(x+3)^2=38
Used the foil method to solve (x+1)(x+1) and (x+3)(x+3)
x^2+x^2+2x+1+x^2+6x+9=38
3x^2+8x+10=38
3x^2+8x-28=0
I know this is wrong because I can't solve.
Any suggestions?

Click here to see answer by scott8148(6628)

Question 239007: Venture Capital:
Henry invested $12000 in a new resturant. When the resturant was sold two years later, he received $27000. Find the average annual return by solving the equation 12,000(1+r)^2=27000.
used the foil to solve the (1+r)^2 or (1+r)(1+r)
12000(1+2r+r^2)=27000
12000+24,000r+12000r^2=27000
-15000+24,000r+1200r^2=0
THis is as far as I could get. Not sure my next step.
Click here to see answer by scott8148(6628)

Question 239234: A flagpole is secured on opposite sides by two guy wires, each of which is 5 ft. longer than the pole. The distance between the points where the wires are fixed to the ground is equal to the length of one guy wire. How tall is the flagpole (to the nearest inch)?
Click here to see answer by Photonjohn(42)

Question 239537: Please explain how to find the difference between 3,695 and 1,486?
Click here to see answer by Alan3354(31528)

Question 239625: what is the closet integer to 4,000 I said 2,000 am I right
Click here to see answer by stanbon(57967)

Question 239736: How would I find the real-number solutions of the equation: x^3-3x=0
Click here to see answer by Theo(3504)

Question 239793: hi sir. how we can make equation from word problems
Click here to see answer by College Student(505)

Question 239988: Doing a quadratic equation problem, i cam across a problem. the equation i got was x^2-6c-3=0. When plugging this problem into the equation, x=-b+/-(sqrt(b^2+4ac))/2a, I did not know if you could plug the b value (-3) into the place of -b or if you had to make it a positive b.
Click here to see answer by JimboP1977(308)

Question 239994: 3x^2-5x+4=0
Click here to see answer by JimboP1977(308)

Question 240171: determine how long the cannon ball was in the air.
using h=-5t(squared)+ 40t+ 3

Click here to see answer by philline_palana(20)

Question 240118: 3x^2-14x+8=0
Click here to see answer by philline_palana(20)

Question 240082: 3x^2=2x+2

Click here to see answer by philline_palana(20)

Question 239701: use the discriminate to find the number and type of solutions to the following quadratic equation x^2+2x+6=0 i got the answer of -20 i just don't know if it's 2 real solutions, 2 imaginary solutions or 1 real solution.
Click here to see answer by philline_palana(20)

Question 240199: Evaluate each given value of the function f(x) if f(x) =6-2x
Find f(0)
Find f(-2)
Click here to see answer by solver91311(17077)

Question 239651: What happens when b=0 in the quadratic x^2+bx+c=0?
Click here to see answer by College Student(505)

Question 240240: i need the formula for how to find the equation of a curved line graph eg y=_xsquared +_x + _
Click here to see answer by Theo(3504)

Question 240299: x to the 2 power- 3 - 3/4 = 0
a) solve by completing the square
b) solve using the quadratic formula
(x to the 2 power minus x minus three-fourths equal 0.

Click here to see answer by stanbon(57967)

Question 240431: if a rectangle has an area of 117cm2 and a perimeter of 44cm what is it's length and breadth
Click here to see answer by stanbon(57967)

Question 240431: if a rectangle has an area of 117cm2 and a perimeter of 44cm what is it's length and breadth
Click here to see answer by checkley77(12569)

Question 240438: What is the values of x in the equation y=x(5x+1)
Click here to see answer by JimboP1977(308)

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