Question

solve for x
1. 4=3sqx^2
2. x^7=1267
3. 81=[2x]^2/3
4. x^4/3

Answer 1

1. sqrt x^2 =x so than 4=3x --- x=4/3
2. x^7 = 1267 --- x=7^root(1267)
3. 81=cuberoot(4x^2) --- 81^3 = 4x^2 --- x_1,2=+/- sqrt((81^3)/4) =
=+/- sqrt(((9^2)^3)/(2^2) =+/- sqrt(((9^3)/2)^2) =+/- (9^3)/2
4. x^(4/3) =cuberoot(x^4) = xcuberoot(x)

Answer 2

Thank you

Answer 3

my pleasure

good luck

bye