Question

(x+5) (x+6) (x+7) please tell me only correct answer ​

Answer 1

Multiplying 1st and 2nd.

(x+5) (x+6)

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

= x^2+11x+30

Multiply it by 3

(x^2+11x+30) (x+7)

= x^3+7x^2+11x^2+77x+ 30x+210

= x^3+ 18x^2+ 107x+210

Answer 2

(x+5) (x+6) (x+7)

$= ( {x}^{2} + 5x +6 x + 30)(x + 7) \\ = ( {x}^{2} + 11x + 30)(x + 7) \\ = {x}^{3} + 11 {x}^{2} + 30x + 7 {x}^{2} + 77x + 210 \\ = {x}^{3} + 18 {x}^{2} + 107x + 210$

Hope this will help...

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