Question

(10x-3)(4x+5)
A.14x^2+62x-15
B.40x^2+38x-15
C.40x^2+38x+2
D.40x^2+62x-15

Answer 1

have you heard of FOIL?

Answer 2

FOIL. First Out Inner Last

Answer 3

? dont know how to do that

Answer 4

have you heard of the distributive property?

Answer 5

no

Answer 6

help

Answer 7

$$\Huge a(b+c)=ab+ac$$

Answer 8

Every time you multiply two numbers you are using this^ property

Answer 9

$$\Huge (10x-3)(4x+5) $$
$$\Huge=(10x-3)(4x)+(10x-3)(5) $$
$$\Huge=40x^2-12x+50x-15$$
$$\Huge =40x^2+38x-15$$

Answer 10

Thank You

Answer 11

Thanks for asking :)