Question

Factorise
(y²-3y)² - 5 (y²-3y)-50​

Answer 1

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Let (y²-3y) = x

(y²-3y)²- 5(y²-3y)- 50 = x² - 5x - 50

x² -10x + 5x - 50

x(x - 10) +5(x - 10)

(x - 10) (x + 5)

(y² -3y - 10) (y² -3y + 5)

[y² - 5y + 2y - 10] (y² -3y + 5)

y(y - 5) +2(y - 5)] (y² -3y + 5)

(y - 5) (y + 2) (y² - 3y + 5)

hope this will help you...

Answer 2

$\huge{\boxed{\fcolorbox{cyan}{grey}{answer}}}$

Let (y²-3y) = x

(y²-3y)²- 5(y²-3y)- 50 = x² - 5x - 50

x² -10x + 5x - 50

x(x - 10) +5(x - 10)

(x - 10) (x + 5)

(y² -3y - 10) (y² -3y + 5)

[y² - 5y + 2y - 10] (y² -3y + 5)

y(y - 5) +2(y - 5)] (y² -3y + 5)

(y - 5) (y + 2) (y² - 3y + 5)

hope this will help you...

-3idiots29