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3 years ago

Help me plsss I need help

Mathematics

1 answer:

RideAnS [48]3 years ago

3 0

x+1+7x-5=180.

8x -4=180

X=23

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makkiz [27]

Answer:

$\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}$

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Given :-

A quadratic equation is given to us.
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Given equation :-

$\implies 2x^2 + 7x +6=0$

Step 1: Find out the factors of 12 :-

We will choose the two factors such that their sum equals to the coefficient of x i.e. 7 .The factors are , 1×12 , 2×6 , 3×4 .

And 3 + 4 = 7. So we will break the middle term into 3x and 4x .

Step 2 : Breaking the middle term :-

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Step 3: Take out common from terms :-

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Step 4 : Equate them with 0 :-

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Hence the correct options are C and D .

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