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Doesn't factor evenly, use quadratic equation
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Earn +20 ptsQ: X2 plus x - 49
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What is x2 plus 49?
x2 + 49 = x2 - (-49) = x2 - (-1)(49) = x2 - (i2)(72) = x2 - (7i)2 = (x - 7i)(x + 7i) where i is the imaginary square root of -1.
Solution set of x2 plus 49 equals 0?
x2 + 49 = 0 ∴ x2 = -49 ∴ x = 7i
Is this trinomial a trinomial square x2 plus 14x plus 49?
x2+14x+49 = (x+7)(x+7) when factored
How do you find the intercepts for the equation x2 plus y-49 equals 0?
x2 + y - 49 = 0At the x-intercepts, y=0:x2 - 49 = 0(x+7)(x-7) = 0x = -7 and x = +7At the y-intercept, x=0:y - 49 = 0y = 49
What is the factorizaton of the polynomial of x2-14x plus 49?
(x-7) (x-7)
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