Solve the following equation and find the value of x
2x+7x+5=0

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-1, 2

-3, -2

2, -6

-5/2, -1

answer is D.

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Detailed Solution

ax +bx +c=0 is the general form of quadratic equation
2x+7x+5=0
2x+2x+5x+5=0
2x(x+1)+5(x+1)=0
(2x+5)(x+1)=0
2x+5=0 or x+1,=0
2x=-5 or x= -1
x=-5/2
Therefore, the values of x are -5/2, -1
Type- CBSE
Subject- Mathematics
Chapter- Surface areas and volumes
Topic- Introductions to surface area and volumes
Sub topic- Introductions to surface area and volumes

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