Suppose a + 1/a=3 . Find the value of:- (a) a^2+1/a^2
(b) a^4+1/a^4
(c) a^3+1/a^3

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Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

20 points plus brainliest andwer plus my hover hoard im v desperate ! evaluate the polynomial for x=-2 in the equation -3x^3+7x^2-7x-1 (simplify your answer)

Given right triangle a w/a hypotenuse length of x+4 and a leg of x, and right triangle b, w/ a hypotense length of 3y and a leg length of y+4 for what values of x and y are the triangles congruent by hl?