Question

Algerba how to solve this

Answer 1

y=70

Explanation:

Simply put 8.5 in for a and 1.5 in for b.

y=(8.5+1.5)(8.5-1.5)

Now Simplify following the rules of BEDMAS

y=(10)(7)

y=70

Answer 2

a=8.5

b= 1.5

y=(a+b)(a-b)

y= (8.5+1.5)(8.5-1.5)

y = 10*7=70

or

y=(a+b)(a-b)= a²-b² =(8.5)²-(1.5)²=70

Explanation: