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Earn +20 ptsQ: What is the solution of the equation x2 - 2x - 7?
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What is this quadratic equation written in standard form x2 - 10x - 6 equals 2x plus 1?
x2 - 10x - 6 = 2x + 1 Subtracting 2x + 1 from both sides gives: x2 - 12x - 7 = 0
Solution of the equation 2x plus 3 equals 7?
2x + 3 = 72x = 4x = 2
Why is it no solution when 2x plus 7 equals 1?
Not sure what you mean; that equation certainly has a solution.
Can you solve x2 plus 2x - 63 equals 0?
x2+2x-63 = 0 When factorised: (x-7)(x+9) = 0 Therefore: x = 7 or x = -9
X2 plus 2x plus -6 equals 0?
x2 + 2x -6 = 0 x2 + 2x + 1 = 7 (x + 1)2 = 7 x = -1 ± √7
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