Question

ERROR ANALYSIS Describe and correct the error in solving the equation.

X -2x²-8=0
-2x²=8
x² = -4
x = ±2
BIU E = T²
T² T₂

Answer 1

x-2x^2-8=0

rearranging :- -2x^2+x-8=0

by using quadratic equation formula

a=-2

b=1

c=-8

Explanation:

quadratic formula : -b +

`\sqrt{b ^(2) - 4ac / 2a`

we have

x = -1

`+ - √( - 63) / 4`