Question

2×(x square -1) = 90-xsquare

Answer 1

Answer:

x = +2sqrt69/3 , -2 sqrt 69/3

Step-by-step explanation:

2(x²-1)=90-x²

2x²-2=90-x²

2x²-2+2= -x²+90+2

2x² = -x² + 92

2x²+x² = 92

3x² = 92

x² = 92/3

x = sqrt 92/3

x = + 2sqrt 69/3 , - 2sqrt 69/3

All the best

pls mark mr brainliest