Question

Factorize: 21x²-23-20​

Answer 1

here is answer

.

`{21x}^(2) - 23 - 20 \\ {21x - 43}^(2)`

but if you need factorization the question should be like this.

.
`{21x}^(2) -23x - 20 \\`

according to that here is answer:

`{21x}^(2) - 23x - 20 \\ {21x}^(2) - 35x + 12x - 20 \\ ( {21x}^(2) - 35x) + (12x - 20) \\ 7x(3x - 5) + 4(3x - 5) \\ (3x - 5)(7x + 4)`