Question

What is the value of b2 - 4ac for the following equation? 2x2 + 3x = -1
0
1
17

Answer 1

Given:

2 x^2 + 3 x = - 1

==> 2 x^2 + 3 x + 1 = 0

Comparing with a x^2 + b x + c = 0

a = 2

b = 3

c = 1

b^2 - 4 a c

==> 3^2 - 4*2*1

==> 9 - 8

==> 1

The answer is 1.

Hope it helps

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