x2-10 = 4x+11
x2-4x-10-11 = 0
x2-4x-21 = 0
(x+3)(x-7) = 0
x = -3 and x = 7
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Solve this problem -x squared -40x- 80 =0
Your Problem: X - 4 = ?Current Problem: 3 [squared] - 4 = ?How: When a numbered is squared, it means you multiply it against itself. So, 3 squared equals 3x3.3x3 = 9So, you would then take 9 and minus it by 4, which would than equal 5.Answer:3 [squared] - 4 = 5or9 - 4 = 5
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You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
3x2 when x = 2 is the answer 3 X 4 = 12 or is the answer (3 X 2)2 = 62 = 36