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disa [49]
3 years ago
9

Can you solve x2-x-20=0 in algebra 1 explanation .

Mathematics
2 answers:
exis [7]3 years ago
7 0

Answer:

x = 5, -4

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Deffense [45]3 years ago
3 0

Answer:

x = 5, x = -4

Explanation:

Solve with the quadratic formula

x_{1,2} =\frac{-(-1)+-\sqrt{(-1)^2-4*1*(-20)} }{2*1}  =  x_{1,2}  = \frac{-(-1)+-(9)}{2*1}

Separate the solutions

x_1 = \frac{-(-1)+9}{2*1} ,  x_2 = \frac{-(-1)-9}{2*1}

x_1 = 5\\x_2 = -4

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