x-2y=4 find (√2;4√2)
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Step-by-step explanation:
putting x=√2 and y= 4√2
L HS ✓2-2×4✓2
= ✓2- 8✓2
=-7√2
RHS= 4
-7√2 is not equal to 4
therefore it √2;4✓2 is not the solution of the equation
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