(1) Solve the following quadratic equations by factoring.
(a) x2 - 5kx + 4k2 = 0 (b) x2 - 10x + 25 - 49t2y2 = 0; solve for x
HINT:
(a) The k's are just constants. (b) Factor the first three terms as a quadratic, then factor as a difference of squares