Q.5 Simplify (-2)7x(-2)3x(-2)4
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( - 2 ) 7x ( - 2 ) 3x ( - 2 ) 4
solution
- 2 × 7x² ( - 2 ) × 3 ( - 2 ) × 4
- 14x² ( - 2 ) × 3 ( - 2 ) × 4
28x² × 3 ( - 2 ) × 4
24x² ( - 2 ) × 4
- 168x² × 4
- 672x²
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