What should substitution should've ended used to rewrite x^8-3x^4+2=0 as a quadratic equation

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Solve for x and select the correct answer

For the word below, click on the drop-down arrows to select the root and its meaning. version