-8m = 48 m = 48/-8 m = -6
4m+15=8m-5 or,4m=20 or,m=5
m2 - 8m + 16 = 0 (m - 4)2 = 0 so m = 4
24
2sinx+1 equals 0
-8m = 48 m = 48/-8 m = -6
m2 - 8m = 0Factor the expression on the left:m (m - 8) = 0If either factor is zero, then the two sides are equal:m - 8 = 0m = 8m = 0
4m+15=8m-5 or,4m=20 or,m=5
m2 - 8m + 16 = 0 (m - 4)2 = 0 so m = 4
24
2sinx+1 equals 0
For y - 2y - 3y equals 0, y equals 0.
8m + 7 = -98m = -16m = -2
If: 8m = 32m+96 Then: m = -4
many solutions
"x equals 0" is an equality, not an inequality. The question is, therefore, not consistent.
Suppose x3-4x = 0. To solve, factor: x3-4x = x(x2-4) = x(x+2)(x-2) = 0 Now, a product equals 0 if and only one or more of the factors equals 0, so set each factor to 0 and solve. The roots are 0,-2 and +2.