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Решите задачу:

$1.(y + 3 {)}^{2} = {y}^{2} + 9$

$2.(x + 8 {)}^{2} = {x}^{2} + 64$

$3.(a + c {)}^{2} = a ^{2} + c^{2}$

$4.(t - 5 {)}^{2} = {t}^{2} + 25$

$5.(7 - {b)}^{2} = 49 + {b}^{2}$

$6.(z - 1 {)}^{2} = {z}^{2} + 1$

$7.(5a + {3)}^{2} = 25 {a}^{2} + 9$

$8.(3y - 4 {)}^{2} = 9 {y}^{2} + 16$

$9.(6 + 2 {c)}^{2} = 36 + 4 {c}^{2}$

$10.(2a - 3b {)}^{2} = 4 {a}^{2} + 9 {b}^{2}$

$11.(5t + 8x{)}^{2} = 25 {t}^{2} + 64 {x}^{2}$

$12.( - 3z + y {)}^{2} = 9 {z}^{2} + {y}^{2}$

$13.( {a}^{2} - 5 {)}^{2} = {a}^{4} + 25$

$14).(a - b ^{2} {)}^{2} = {a}^{2} + {b}^{4}$

$15.( {a}^{2} - {b^{3}) }^{2} = {a}^{4} + {b}^{5}$