find the product for these questions 1.( 2x ) ( 10x )2. -3m( m + 8 )3. 4d( 2d -9 )4. ( 3x + 4 ) ( x -2 )5. ( 2y -1 ) ( 4y - 3 )

 1.( 2x ) ( 10x ) = 20 x²

2.  -3m( m + 8 ) = -3m² - 24m

3. 4d( 2d -9 ) = 8d² - 36d

4. ( 3x + 4 ) ( x -2 ) = 3x² - 6x + 4x - 8 = 3x² - 2x -8

5. ( 2y -1 ) ( 4y - 3 ) = 8y² - 6y - 4y + 3 = 8y² -10y +3

Solution 1 :




Solution 2 :




Solution 3 :




Solution 4 :






Solution 5 :







Note :
Remember this formulas :

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