Question

factorize the following expressions y²-18y+81 ​

Answer 1

To factorise :

• y² - 18y + 81

Solution :

→ y² - 18y + 81

→ y² -2y × 9 + 9²

→ (y - 9)²

→ (y - 9)(y - 9)

∴ Required answer :

Factors are :

• (y - 9) and (y - 9)

Verification :

(y - 9)(y - 9)

→ (y × y) + (y × -9) + (-9 × y) + (-9 × -9)

→ y² + -9y + -9y + 81

→ y² + -18y + 81

• Hence Verified !

Answer 2

Answer:

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