Question

solve 4x^2-30=0

Answer 1

Factor out 2

Answer 2

is the answer plus or minus the square root of 15

Answer 3

\[2(2x^2-15)=0\]
\[2x^2-15=0\]
\[x^2=\frac{15}{2}\]
\[x=\pm \sqrt{\frac{15}{2}}=\pm \frac{\sqrt{30}}{2}\]

Answer 4

i got it thanks !

Answer 5

yw