(d+7)/(d2-49)
(d+7)/(d+7)(d-7)
1/(d-7)
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X2+5x-6. a=1, b=5, and c=-6 The formula is: -b plus or minus the square root of b squared minus 4ac all over 2a. -b+square root of b2-4ac ---- 2a -5 plus or minus the square root of 5 squared minus 4(1)(-6) -5 plus or minus the square root of 25-4(-6) -5 plus or minus the square root of 25+24 -5 plus or minus the square root of 49 -5 plus or minus 7 Here is where you split into two different answers: Number 1: -5 plus 7= 2 Number 2: -5 minus 7= -12 Your answer is X=2, -12
8060 Source: calculator
9t2 + 42t + 49 is a perfect square, equal to (3t + 7)2
negative 49. This is because a minus multiplied by a plus is a minus.
well, the square root of 81 is 9, and seven squared is 49, so it wud be 40