Question

(z+5)²= what is the answer
​

Answer 1

z²+25+10z...........[(a+b)²=a²+b²+2ab]

Answer 2

Answer:

According to the formula [(a + b)²= (a)² + (b)² + 2ab]

(z+5)²

= (z + 5 ) ( z + 5)

( z × z) + ( z × 5) + ( 5 × z ) + ( 5 × 5)

z² + 5z + 5z + 25

z² + 10z + 25