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aliina [53]
3 years ago
8

Factor1) (5a–3b)^2–25a^22) (−2a^2+3b)^2–4a^4PLS Helppp

Mathematics
1 answer:
Roman55 [17]3 years ago
3 0

Answer:

- 3b(10a - 3b)

Step-by-step explanation:

Given

(5a - 3b)² - 25a² ← this is a difference of squares and factors in general as

a² - b² = (a - b)(a + b), thus

(5a - 3b)² - 25a²

= (5a - 3b)² - (5a)²

= (5a - 3b - 5a)(5a + 3b + 5a) ← simplify parenthesis

= - 3b(10a + 3b)

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Answer:

16.7 percent decrease.

Step-by-step explanation:

Difference in value = 150,000 - 180,000

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As a percent this  =  (-30,000 /  180,000)   * 100

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Answer:

(1 ÷ 1/6) * 6

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Given that :

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3 years ago
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Answer:

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Step-by-step explanation:

This is an example of a simultaneous equation.

First write this word problem as equations, where x is the "first number" that you've mentioned and y is the "second number".

x + 2y = 14  (equation 1)

2x + y = 10  (equation 2)

This is solved using the elimination method.

We need to make one of the coefficients the same - in this case we can make y the same. In order to do this we need to multiply equation 2 by 2, so that y becomes 2y.

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Now subtract equation 1 from equation 2.

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Now we substitute our x value into equation 1 to find the value of y.

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