Math, asked by rakeshkumars1976, 6 months ago

factorise 84-2x-2x²

Answers

Answered by sejil

5

Answer:

divide the polynomial by -2

then it becomes

X ^2 + X -42

solve by splitting the middle term

x^2 +7x -6x-42

(X+7)(x-6)

Answered by Anonymous

7

Answer:

-2x² - 2x -84

= -2x² -( 14-12)x - 84

= -2x² - 14x + 12x -84

= -2x (x + 7) +12 ( x - 7)

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