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Earn +20 ptsQ: What is 15x 7 equivalent to?
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Are these expressions 15x-9-4x plus 2 and 11x-7 equivalent?
yes
What is the factored form of 15x plus 32x -28?
15x + 32x - 28 = 47x - 28 = (√47x)2 - (√28)2 = (√47x)2 - (2√7)2 = (√47x - 2√7)(√47x + 2√7)
15x - 8?
7
-9y - 15x -3?
-9y-15x ---- -3
X2-15x plus 56 equals 0 in factored form?
x2-15x+56 = 0 (x-8)(x-7) = 0 Therefore: x = 8 or x = 7 To ensure that your answer is correct multiply out the brackets and you should go back to the original quadratic equation.
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