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Given quadratic expression: x

Now expand the given quadratic expression by splitting ‘3x’ term in two parts.

‘3x’ can be written as ‘(1 + 2) x’.

Also, the constant term ‘2’ can be written as ‘(1 * 2)’

Hence > x

Now group the first two and last two terms > x(x + 1) + 2(x + 1)

Given quadratic expression: x

Now expand the given quadratic expression by splitting ‘2x’ term in two parts.

‘2x’ can be written as ‘(4 - 2) x’.

Also, the constant term ‘-8’ can be written as ‘(4 * -2)’

Hence > x

Now group the first two and last two terms > x(x + 4) – 2(x + 4)