Question

Check the given values are solutions of the equations or not.

1. 3x+2y-5=7 for x=2, y=3

2. a-b+c-d =18 for a=-4, b=5, c=9, d=-18

3. xy(x+5) +z= -151 for x = 5, y = 3, z = 1

4. xy(x+5) -z= 150 for x = 5, y = 3, z = 1

5.a+b/a-b = -2 for a=-2, b=-6

Answer 1

Answer:

1,yes   if we put 2,3 we get 3(2)+3(2)-5=12-5=7

2,yes   -4-5+9-(-18)=-9+27=18

3,no   xy(x+5)+z=-151 we get 15(10)+1=151   151 not equal to -151

4,no    xy(x+5)-z=150 we get 15(10) -1=149 149not equal to 150

5,yes   a+b/a-b=-2-6/-2+6=-8/4=-2 hence true

hope it helps

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