What is 3x^2 + 10x + 8?
3x^2 + 10x + 8
1 Answer
Apr 26, 2018
Explanation:
"assuming you require factorisation of the quadratic"
"using the a-c method of factoring"
"which sum to + 10 are + 6 and + 4"
"split the middle term using these factors"
rArr3x^2+6x+4x+8larrcolor(blue)"factor by grouping"
=color(red)(3x)(x+2)color(red)(+4)(x+2)
"take out the "color(blue)"common factor "(x+2)
=(x+2)(color(red)(3x+4))
rArr3x^2+10x+8=(x+2)(3x+4)