Question

If a + b = 15 and a square minus b square equal 60 what is the value a-b

Answer 1

Answer:

(a-b)=4

Step-by-step explanation:

a+b=15 (1)

a²-b²=60 (2)

a-b=?

Using identity

(A+B)(A-B)=A²-B²

A=a

B=b

=(a+b)(a-b)=a²-b²

Substituting (1) and (2)

15×(a-b)=60

(a-b)=60÷15

(a-b)=4

Answer 2

Step-by-step explanation:

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