47.4k views
4 votes
Can you solve x2-x-20=0 in algebra 1 explanation .

2 Answers

7 votes

Answer:

x = 5, x = -4

Step-by-step explanation:

Solve with the quadratic formula


x_(1,2) =(-(-1)+-√((-1)^2-4*1*(-20)) )/(2*1) =
x_(1,2) = (-(-1)+-(9))/(2*1)

Separate the solutions


x_1 = (-(-1)+9)/(2*1) , x_2 = (-(-1)-9)/(2*1)


x_1 = 5\\x_2 = -4

User PriNcee
by
7.8k points
5 votes

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.

User Derrickrozay
by
7.3k points

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