Question

HELP !! How can I Describe and correct the error in solving this equation below in the image .

Answer 1

Required Answer :-

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

So:-

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

First write the equation

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

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

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

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

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

multiply 6 with 6 to get 36

$\dashrightarrow \sf 72- 54 = 18$

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

$\dashrightarrow \bf18 = 18$

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

Hence proved ~