Y= 13x+4x
y equals the amount of money spent
The answers are :
13) 9
14) 200
15) -10
16) -300
17) -276
18) -66
A^2 + 2AB + B^2 = (A + B)^2 ==>
16X^2 + 40X + 25 =
= (4X)^2 + 2*4*5X + 5^2 =
= (4X + 5)^2
<span>(4x + 5)(4x + 5)</span>
True. they are both x so they are like terms
