1 Answer

Matter Cat · Answer 1 · 2023-08-27T09:32:52+0000

So as u can see we have to find whether the value of x is correct or not.

So:-

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$\dashrightarrow \sf 2 {x}^(2) - 54 = 18$

First write the equation

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$\dashrightarrow \sf 2 {(6)}^(2) - 54 = 18$

Put value of x I.e 6 in the equation.

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$\dashrightarrow \sf 2 * (6 * 6 )- 54 = 18$

To make it easy to understand I have covered square above 6 in it's original form I.e 6 ×6

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$\dashrightarrow \sf 2 * (36)- 54 = 18$

multiply 6 with 6 to get 36

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$\dashrightarrow \sf 72- 54 = 18$

open the brakets and multiple 2 with 36 and then subtract 72 with 54

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$\dashrightarrow \bf18 = 18$

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$\orange{\bf \dag LHS = RHS \dag}$

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Hence proved ~

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