Question

Simplify (x-5) (x+6)

Answer 1

Answer:

(x-5) (x+6)

= x^2 +6x -5x -30

= x^2+x−30

Answer 2

Hi mate!

Here is your answer-

$(x + a)(x + b) = {x}^{2} + x(a + b) + ab \\ using \: this \: identity \: \\ \\ (x + ( - 5))( x + 6) = \\ \\ = {x}^{2} + x( - 5 + 6) + ( - 5 \times 6) \\ = x {}^{2} + x(1) + ( - 30) \\ = {x}^{2} + x - 30$

Hence, solved

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