Question

verify whether given values of X are roots of the equation or not. (i) x² + x+1 =0. ; x= 0 , x = 1
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Answer 1

Answer:

x²+x+1

If, x=0

0²+0+1

0+0+1

1

If, x=1

1²+1+1

1+1+1

3

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Answer 2

Answer:

Determine whether the values given against each of the quadratic equation are the roots of the equation.

x

2

+4x−5=0,x=1,−1

Step-by-step explanation:

x

2

+4x−5=0

given values of x=1,−1

when x=1→1

2

+4(1)−5=1+4−5=0 satisfies the equation.

when x=−1→(−1)

2

+4(−1)−5=1−4−5=−8 does not satisfy the equation.

Therefore x=1 is only the root of given equation.

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