3 years ago

Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x.

2 answers:

5 0

2x2 +3x -7 =x2 +5x +39
2x2 +3x -7 -x2 -5x -39=0
x2 - 2x -46 =0
(x-1)2 -46 -1 =0
(x-1)2 -47=0
(x-1)2 = 47
x-1= + or - the square root of 47
x= 1 + or - the square root of 47

Kipish [7]3 years ago

5 0

Answer:

the answer is D

Step-by-step explanation:

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