Question

ANSWER QUICK 70 POINTS!!!!!!!!!!!!!!
Identify the property that justifies each step asked about in the answer area below.
Line 1: (9+x)x
Line 2: x(9+x)
Line 3: x(x+9)

Answer 1

Line 1-Line 2-Associative property .

Line 2-Line 3- Distributive property

Solution:-

$\\ \rm\longmapsto (9+x)x$

$\\ \rm\longmapsto x(x+9)$

$\\ \rm\longmapsto x(9+x)$

$\\ \rm\longmapsto x^2+9$