Exercise
$\left(x+7\right)\left(x-4\right)+\left(x-4\right)\left(9-5x\right)$
Step-by-step Solution
Learn how to solve special products problems step by step online. Expand the expression (x+7)(x-4)+(x-4)(9-5x). Multiply the single term x-4 by each term of the polynomial \left(x+7\right). Multiply the single term x by each term of the polynomial \left(x-4\right). When multiplying two powers that have the same base (x), you can add the exponents. Multiply the single term 7 by each term of the polynomial \left(x-4\right).
Expand the expression (x+7)(x-4)+(x-4)(9-5x)
Final answer to the exercise
$-4x^2+32x-64$