Question

Factorise 25-y^2-4y-4

Answer 1

Answer:

Step-by-step explanation:

ANSWER-

25-y²-4y-4

-y²-4y+21

multiplying eqn with minus(-)

y²+4y+21

(middle term splitting)

y²+7y-3y-21

y(y+7)-3(y+7)

(y-3)(y+7)

y=3 or y= -7

Answer 2

$\textbf{\huge{ANSWER:}}$

$25 - {y}^{2} - 4y - 4 \\ \\ = > ( - {y}^{2} ) - 4y + 21 \\ \\ = > ( - {y}^{2} ) - 7y + 3y + 21 \\ \\ = > - y(y + 7) + 3(y +7) \\ \\ = > (3 - y)(y + 7)$

Explanation:- First, we need to simplify the given equation.

Next, we need to apply the mid term splitting method on the obtained equation.

After that, we can jus simply simplify it and then get the required answer.