Solve (3x-7z). (2y-1)and verify your answer for x= 1,y=-2,z=2.
Answers
Answered by
6
Answer:
÷(3×1-7×2)(2×-2-1)
=(3-14)(-4-1)
=(-11)(-5)
=-11×-5. [-×-=+]
=55
Answered by
0
Here's your desired answer :-
=> (3x-7z) (2y-1)
=> {2y(3x-7z)} - {1(3x-7z)}
=> (6xy-14z) - (3x-7z)
=> 6xy-14z-3x-7z
Verification ( x = 1 , y = (-2) , z = 2 )
LHS
=> (3x-7z) (2y-1)
=> {(3×1)- (7×2)} × {(2 × (2) - 1)}
=> (3-14) × ((-4)-1)
=> (-11) × (5)
=> 55
RHS
=> 6xy - 14yz - 3x +7z
=> (6×1×(-2)) - (14×(−2)×2) −(3×1)×(7×2)
=> (−12)−(14×(−4))−3+14
=> 55
LHS =RHS (Proved✅)
Hope it helps !! G'day mate !!
~SKZ'Fan
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