Answer:
multiply both sides by
Step-by-step explanation:
Given
x - 8 = 12
first step
Add 8 to both sides
x = 20
second step
Multiply both sides by to clear the fraction
x = × 20 = 30
85.006
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C=5x+2y
Feasible points are (2,-2),(2,2),(-3,1) and (-1,-2)
at (2,-2) , C=5(2)+2(-2)=10-4=6
at (2,2) ,C=5(2)+2(2)=10+4=14
at (-3,1) ,C=5(-3)+2(1)=-15+2=-13
at (-1,-2) ,C=5(-1)+2(-2)=-5-4=-9
Maximum value is 14 at (2,2) .
Minimum value is -13 at (-3,1)
This would be the difference of perfect squares.
x^2 - 9
(x - 3) (x + 3)