SOLUTION: what is the product of (7x+1/2) and (-10x-22)? i have gotten -70x squared -11 but my teacher told me that was incorrect and i dont know what im doing wrong.

Question 657397: what is the product of (7x+1/2) and (-10x-22)? i have gotten -70x squared -11 but my teacher told me that was incorrect and i dont know what im doing wrong.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The rule is:
( a + b ) x ( c + d ) = ac + bc + ad + bd
You got the ac and the bd, but you
left out the bc and ad

-------------------------
You can check by plugging in some value for x
I'll say

and, also

OK
RELATED QUESTIONS
Which statement is true for the quadratic equation 0 = -2x^2 - 9x - 4? I have gotten... (answered by Earlsdon)

I am trying to solve an equation with fractions. This is the problem 2x over x^2+6x+8 (answered by stanbon)

What is the domain and range of the function g(x)= x^4-3x^3+2x^2+x-1 I had gotten... (answered by KMST)

The question is to find all quadratic equations with roots 2+3i and 2-3i. I have actually (answered by stanbon)

Jessie and Harper left their school at the same time and began travelling down the same... (answered by jim_thompson5910)

How do I solve this one: Sally was making a peanut butter and jelly sandwich. Sally... (answered by stanbon)

I have some problems I got wrong on my test. Please explain step by step what I should... (answered by stanbon,chitra)

My question is written on a handout from my teacher. She wants us to show a formula and... (answered by checkley71)

my teacher gave me the expression .5(2x-14)=6x+28. i got the answer of x=-7...is that... (answered by rothauserc,ewatrrr)