امتحان الوحدة ا12

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1) 15 m n - 10 m + 6 n - 4
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2) 8 x 3 - 18 x
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3) 8 x 3 + 125
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4) x 2 - 12 x + 36
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5) k 2 + 10 k + 21
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6) 4 x 2 - 8 x - 5
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7) 25 x 2 - 9 + ( 5 x - 3 ) ( 7 x + 8 )
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( 4 x + 3 ) 2 = ..............................................................................................
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x 2 - 6 x + 5
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