1.

The minimum value of the polynomial x²+x-2 is a).1 b).9/4 c).-9/4 d).-1

Answer»

\red{Answer}

USING CALCULAS method

Differentiate with RESPECT to x =

d/dx = 2x+1

now to FIND minimum

equate d/dx=0

2x+1=0

x=-1/2

Now substitute x=-1/2 in POLYNOMIAL

we get , (1/2)²-1/2-2

=1/4-1/2-2

=-1/4-2

= -9/4

Answer = \orange{option \ (c) \ -9/4}

\green{peace}

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