If by w2 you mean "w squared", then it cannot be done.
BECAUSE
w2 + 49 = 0
w2 +49 - 49 = 0 - 49
w2 = -49
w2 means a number multiplied by itself. Any number multplied by itself will result in a POSITIVE number.
positive x positive = positive
negative x negative = negatve
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Does this mean w^2 + w -30 = 0 ? If so, w = 5 or -6
w2+18w+77 = (w+7)(w+11) when factored
x = W2 - V and you cannot get any further than that since neither W nor V are known.
w2-3w = 0 w(w-3) = 0 w = 3 or w = 0
l + w = 110 so l = 110 - w, making lw = 110w - w2 which equals 2800. This rearranges to w2 - 110w + 2800 = 0. The factors of this are (w - 70)(w - 40) so w = 40 and l = 70. Factors of 2800 are 2 x 1400, 4 x 700, 5 x 560, 7 x 400, 8 x 350, 10 x 280, 20 x 140, 25 x 112, 70 x 40