David W. answered 01/21/19
Tutor
4.7
(90)
Experienced Prof
-7*x2 = -28
x2 = 4
x = ±2 (two answers)
Emily T.
asked 01/20/19Please write in an equation and solve! Please show steps!
David W. answered 01/21/19
Experienced Prof
-7*x2 = -28
x2 = 4
x = ±2 (two answers)
Mark M. answered 01/20/19
Mathematics Teacher - NCLB Highly Qualified
-7n2 = -28
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