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mrs_skeptik [129]
3 years ago
12

4a^2-9(x+y)^2 factories this step by step pls. Anyone !! Help me pls!!​

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
5 0
  • Answer:

<em>(2a - 3x - 3y)(2a + 3x + 3y)</em>

  • Step-by-step explanation:

<em>Hi there !</em>

use formula

<em>a</em><em>² - </em><em>b</em><em>² = (a - b)(a + b)</em>

<em>a</em><em> = 2a</em>

<em>b</em><em> = 3(x + y)</em>

<em />

<em>4a² - 9(x+y)² =</em>

<em>= [2a - 3(x + y)][2a + 3(x + y)]</em>

<em>= (2a - 3x - 3y)(2a + 3x + 3y)</em>

<em />

<em>Good luck !</em>

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3 years ago
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Answer:

Step-by-step explanation:

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8 0
3 years ago
Complete the steps to solve the polynomial equation x3 – 21x = –20. According to the rational root theorem, which number is a po
jeka94

Answer:

Zeroes : 1, 4 and -5.

Potential roots: \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.

Step-by-step explanation:

The given equation is

x^3-21x=-20

It can be written as

x^3+0x^2-21x+20=0

Splitting the middle terms, we get

x^3-x^2+x^2-x-20x+20=0

x^2(x-1)+x(x-1)-20(x-1)=0

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Splitting the middle terms, we get

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Using zero product property, we get

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x+5=0\Rightarrow x=-5

Therefore, the zeroes of the equation are 1, 4 and -5.

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Constant = 20

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3 0
3 years ago
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8 0
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Answer:

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3672 * 12 = $44064

7 0
3 years ago
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