Question

the expression (3-x^2+2x)-(-3x^2-12+8x) is simplified to ax^2+bx+c.What is the value of b?f)-6g)-4h)6j)10

Answer 1

$(3-x^2+2x)-(-3x^2-12+8x)$

Remove the parentheses:

$3-x^2+2x+3x^2+12-8x$

Add like terms:

$\begin{gathered} (3x^2-x^2)+(2x-8x)+(12+3) \\ 2x^2-6x+15 \end{gathered}$

Therefore, the value of b is -6