Question

If ab = 5, then (a + b)2 – (a - b)2 = ​

Answer 1

Mate answer in explanation :----pic attached

#maths guy..

Answer 2

Answer:

ab=5 Then,

we have to put formula that,

(a+b) ²=a²+b² +2ab

(a-b) ²=a²+b²-2ab

a²+b²+2ab-a²+b²-2ab

5²+5²+2(5×5) -5²+b²-2(5×5)

25+25+100 -25+25-100

200-125+25

25+25

50ans....