Physics, asked by raniparmila921, 6 days ago

10. Show that x2 + 2x + 7 has no real zeroes.​

Answers

Answered by poojarimanish77
5

+2x+7=0 is a quadratic equation as it's highest power is 2.

+2x+7=0

comparing the above equation with ax²+bx+c=0, we get ,

a=1,b=2,c=7

x=[-b±(-4ac)]÷[2a]

..........(Formula)

x=[-2±(2²-4×1×7)]÷[2×1]

= [-2±(-24)]÷[2]

But -24 is not a real number.

Thus, x²+2x+7=0 has no real roots.

Thus, x²+2x+7=0 has no real zeroes.

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