Question

if a²+b²=27 and ab=8,find the value of
a. (a+b)²
b. (a-b) ²​

Answer 1

Answer:

a2+2ab+b2,(a+b),a2-2ab+b2,(a-b)

Answer 2

Step-by-step explanation:

a²+b²=a²+b²+2ab

27+2(8)

27+16

43

a²-b²=a²+b²-2ab

27-2(8)

27-16

11