Question

the sum of two expressions is 5 x square + 7 x + 9 if one expression is x square - 3 x find the other​

Answer 1

Answer:

5(-3)+ 7(-3)9

-15+-21+9

=45

Answer 2

Answer:

Step-by-step explanation:

let A+B = 5 x square + 7 x + 9

    A = x square - 3 x

to find we just subtract A from main expression

B = 5x^2+7x+9 - (x^2-3x)

B = 4x^2+10x+9