b2 - 7b - 6
b = -4
(-4)2 - 7(-4) - 6 = 16 +28 - 6 = 38
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2*3*4 = 24
Unfortunately there is no expression to evaluate!
Evaluate the expression below when x = 2.3x2-2x+4
If x is 4 then 34.5x evaluates to 34.5 times 4 = 138
2x - 3y -7y + 4x - 5 = 6x - 10y - 5 and (6 x 10) - (10 x 4 ) - 5 = 60 - 40 - 5 = 15