Question

Xsq+px+16
Find the value of p and roots also.
When eq has equal roots???

Answer 1

eq has equal roots means...

discriminant=0

${b}^{2} - 4ac = 0$

xsq+px+16

b=p. a=1. c=16

${p}^{2} - 4 \times 16 \times 1 = 0$

${p}^{2} - 64 = 0$

${p}^{2} =64$

$p = + 8 \: and \: - 8$

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