Question

pls help in this ans pls help me​

Answer 1

Answer:

A)  95x + 49

B)  81(x^2)(y^2) + 36xyz + 4z^2

Step-by-step explanation:

(a+b)^2 = (a^2 + 2ab + b^2)

Answer 2

Step-by-step explanation:

a)

${(5x + 7)}^{2} \\ using \: identity \\ {(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab \\ {(5x + 7)}^{2} = {(5x)}^{2} + {(7)}^{2} + 2(5x)(7) \\ \: \: \: \: \: \: \: \: = 25 {x}^{2} + 49 + 70x$

b)

${(9xy + 2z)}^{2} = {(9xy)}^{2} + {(2z)}^{2} + 2(9xy)(2z) \\ \: \: \: \: \: \: \: \: \: = 81 {x}^{2} {y}^{2} + 4 {z}^{2} + 36xyz$