Question

factorize 25 - 4 y square plus 21 y​

Answer 1

Answer:

5²-2y²

Step-by-step explanation:

25-21y+4y²

5²-42y+2y²

5²-2y²

Answer 2

Answer:

(25-4y)(y+1)

Concept: This question is from the 'Factorization' topic, we will factor the given equation

Given: 25-4y²+21y

To find: the factor of a given question

Solution: 25-4y²+21y

We can write this question like that

   -4y²+21y+25

= -(4y²-21y-25)

= -(4y²-25y+4y-25)

rearrange the terms

=-(4y²+4y-25y-25)

=-4y²-4y+25y+25

=-4y(y+1)+25(y+1)

=(25-4y)(y+1)

Hence, the factors of the given questions are (25-4y)(y+1)