Question

factorise y³-7y+12 please anwer i shoul submit it you will get brainly answer tag​

Answer 1

Correct Question

Factorise

y² - 7y + 12

The Question reasoning incorrect is that the equation (i.e., y³ - 7y + 12) can't be factorised completely.

Solution:-

y² - 7y + 12

→ y² - 4y - 3y + 12

→ y(y - 4) - 3(y - 4)

→ (y - 3)(y - 4)

Hence, Factorized.

Explaination:-

To factorise a quadratic equation, we split the middle term.

We split it in such a manner that 2 numbers should obtain a product of the first and the last term and the sum of those numbers should be the middle term.

Hence, we want to numbers such that, their product should be

1 × 12 = 12

And sum should be -7

Numbers are -3 and -4

-3 × -4 = 12

-3 + (-4) = -7

Answer 2

Answer:

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