Question

Multiply (x - 4) (x + 5)​

Answer 1

Step-by-step explanation:

(x-4)(x+5)

x² + 5x - 4x - 20

• x² + x - 20

For checking We need to Factorise this -

x² + 5x - 4x - 20 ( By Middle Term Split )

x(x+5)-4(x+5)

(x-4)(x+5)

$x = 4 \: or \: - 5$

Answer 2

QUESTION :-

Multiply (x-4)(x+5)

ANSWER :-

(x+5)(x-4)

x^2 +5x -x -20

=> x^2 + x - 20

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