Question

. If A = 2x - 7x^{2} 3 and B = 4x^{2} - 12x, what is A B? help

Answer 1

Answer:

$-3x^2 -10x + 3$

Third option from the top

Step-by-step explanation:

We are given

$A = 2x - 7x^2 + 3\\\\\longrightarrow A= -7x^2 +2x + 3$  (writing in standard form ax² + bx + c)

$B = 4x^2 - 12x$

A + B =

$-7x^2 + 2x + 3\\\\\indent{\;\;\;\;\;\;+}\\\\\underline{\;\;4x^2-12x\;\;\;\;\;\;}\\\\-3x^2 - 10x + 3$