Question

solve by identity (4x-3)(5x-3)​

Answer 1

Step-by-step explanation:

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(4x-3)(5x-3) =

$20 {x}^{2} - 12x - 15x + 9 \\ = 20 {x}^{2} - 27x + 9$

Answer 2

Step-by-step explanation:

BY USING IDENTITY:

$(x + a)(x + b) = {x}^{2} + (a + b)x + ab$

explanation:

$(4x - 3)(5x - 3)$

$( - 3 + 4x)( - 3 + 5x)$

$({ - 3})^{2} + (4x + 5x) \times - 3 +( 4x \times 5x)$

$9 - 27x + 20 {x}^{2}$

$20 {x}^{2} - 27 + 9$