find the value of (5+x)(8-x).
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( 5 + x )( 8 - x )
=> 40 - 5x + 8x - x^2
=> - x^2 + 3x + 40
=> - x^2 + 8x - 5x + 40
=> - x ( x + 8 ) - 5 ( x - 8 )
=> ( x + 8 ) = 0 OR ( - x - 5 )
=> x = - 8 OR x = 5 <<< Answer
Hope it will helps you ☺
=> 40 - 5x + 8x - x^2
=> - x^2 + 3x + 40
=> - x^2 + 8x - 5x + 40
=> - x ( x + 8 ) - 5 ( x - 8 )
=> ( x + 8 ) = 0 OR ( - x - 5 )
=> x = - 8 OR x = 5 <<< Answer
Hope it will helps you ☺
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