Question

помагите пожалуйста решить​

Answer 1

Пошаговое объяснение:

$1) {b}^{2} - 2by + {y}^{2} = {(b - y)}^{2}$

$2)9 {c}^{2} + 12c + 4 = {(3c + 2)}^{2}$

$3)64 {x}^{2} - 144xy + 81 {y}^{2} = {(8x - 9y)}^{2}$

$25 {m}^{6} - 30 {m}^{3} {n}^{2} + 9 {n}^{4} = {(5 {m}^{3} - 3 {n}^{2} ) }^{2}$

$5) {a}^{4} - 0.8 {a}^{6} + 0.16 {a}^{8} = {( {a}^{2} - 0.4 {a}^{4} ) }^{2}$

$6){a}^{2} - ab + \frac{1}{4} {b}^{2} = {(a - \frac{1}{2} {b}) }^{2}$