Question

factorise:-
1) x^2 - 21x + 90
2)x^2 + 5x - 84
3)x^2 - 20x - 300
4)x^2 - 3x - 28
5)x^2 - 7x + 10
plss post correct answers
The best answer will be selected as brainliest...
​

Answer 1

Answer:

1 is 6 or 15

2 is 7 or -12

3 is -10 or 30

4 is -4 or 7

5 is 2 or 5

Step-by-step explanation:

by factorization

we can also solve them by quadratic formula

I hope you can understand

if u like mark it as brainlist answer and follow me