Mathematics: 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 )

find the product for these questions 1.( 2x ) (

Ответ:

reneecoutinho10

31.12.2021

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

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Ответ:

carolelai08

31.12.2021

Mathematics

Solution 1 :
(2x)(10x)

$\boxed{= 20x^{2}}$

Solution 2 :
-3m(m+8)

$\boxed{= -3m^{2} - 24m}$

Solution 3 :
4d(2d-9)

$\boxed{= 8d^{2} -36d}$

Solution 4 :
(3x+4)(x-2)

$= 3x^{2} - 6x + 4x - 8$

$\boxed{= 3x^{2} - 2x - 8}$

Solution 5 :
(2y-1)(4y-3)

$= 8y^{2} -6y -4y + 3$

$\boxed{= 8y^{2} -10y + 3}$

Note :
Remember this formulas :
$a(b+c) = (a \times b)+(a \times c)$

$(a+b)(c+d)=(a \times c)+(a \times d)+(b \times c)+(b \times d)$

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Ответ:

emeraldchest99

05.01.2020

Mathematics

A) -2 1/2 divided by

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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 )

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