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True [87]
3 years ago
6

Find the solution(s) to x^2- 14x + 49 = 0.

Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

\boxed{C. \: x = 7 \: only}

Step-by-step explanation:

=  >  {x}^{2}  - 14x + 49 = 0 \\  \\  =  >  {x}^{2} - (7 + 7)x + 49 = 0 \\  \\  =  >  {x}^{2}  - 7x - 7x + 49 = 0 \\  \\  =  > x(x - 7) - 7(x - 7) = 0 \\  \\  =  > (x - 7)(x - 7) = 0 \\  \\  =  >  {(x - 7)}^{2}  = 0 \\  \\  =  > x - 7 = 0 \\  \\  =  > x = 7

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