Question

a+b=7, a-b=5 find a^2-b^2=​

Answer 1

Answer:

35

Step-by-step explanation:

a²-b²= (a+b)(a-b)

a+b=7

a-b=5

A²-B²=7*5

= 35

Answer 2

Answer:

35

Step-by-step explanation:

a+b=7 - 1)

a-b=5 - 2)

by subtracting the 2) from 1), we get

2b = 2

b = 1

put b = 1 in 1), we get

a + 1 = 7

a = 6

therefore, we get  a^2 - b^2 =​ 6^2 - 1^2 = 36 - 1 = 35

I hope it may help you and others.