SOLUTION: find the zeros of the polynomial by prime factorisation method 2x^2 + 7/2x + 3/4
Algebra.Com
Question 1105874: find the zeros of the polynomial by prime factorisation method 2x^2 + 7/2x + 3/4
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Multiply everything by 4 to clear fractions
8x^2+14x+3=0
guess and check is (4x+1)(2x+3)=0, and zeros are -1/4 and -3/2
===========
also
grouping 8x^2+2x+12x+3=2(4x+1)+3(4x+1)
==========
also convert equation to
x^2+14x+24, dividing first term by 8 and multiplying constant by 8
factor to (x+12)(x+2)
divide constant by 8 and reduce to lowest terms (x+(3/2))(x+(1/4))
put the denominator in front (2x+3)(4x+1)
RELATED QUESTIONS
tell me the method of how to find square root of a number by prime factorisation method... (answered by longjonsilver)
1) Find all zeros of the polynomial x^4+2x^3+x^2-2x-2.
2) find the zeros of... (answered by josgarithmetic)
"Find the zeros of the polynomial equation X^4 + 2X^3 - 13X^2 - 14X + 24 =... (answered by MathLover1,greenestamps)
Find the cube root of the following by Prime Factorisation... (answered by stanbon)
how do you find the zeros of the polynomial... (answered by Fombitz)
Find a bound on the real zeros of the polynomial function
{{{ f(x)=x^4+2x^3-4x-7... (answered by lwsshak3)
Find all of the real zeros of the polynomial... (answered by jsmallt9)
Solve the equation by factorisation method x^2+(x+2)^2=650
I attempted the question... (answered by math-vortex,bucky)
Hello,
My question is
2x^4+15x^3+31x^2+20x+4 find all rational zeros of the... (answered by josgarithmetic,ikleyn)