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Andreyy89
3 years ago
7

I need the solution

Mathematics
1 answer:
Nataly [62]3 years ago
5 0

The only thing you can do here is to try to simplify, so I'll assume that's what you want to do.

\dfrac{b^2-a^2}{2a^2+ab-3b^2}

The numerator is a difference of squares, so it's easy to factorize:

b^2-a^2=(b-a)(b+a)

In the denominator, we factorize by grouping:

2a^2+ab-3b^2=2a^2-2ab+3ab-3b^2=2a(a-b)+3b(a-b)=(2a+3b)(a-b)

So we have

\dfrac{b^2-a^2}{2a^2+ab-3b^2}=\dfrac{(b-a)(b+a)}{(2a+3b)(a-b)}=-\dfrac{b+a}{2a+3b}

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!NUMBER 4! please help!! show all work please
snow_lady [41]

Answer:

C. 88

Explanation:

f(x) = 4x + 8  ||  g(x) = x² + x

fg( -5 )

go from right to left in such function problems.

replace x with [ -5 ]

f( (-5)²  -5)

f(20)

[ replace x with 20 ]

4(20) + 8

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7 0
2 years ago
I will give brainliest to the best answer.
aniked [119]

Given that two digit numbers are used and one digit is drawn randomly.

Sample space = {10,11,...99}

n(S) = 90

32 is only one number favorable

Hence P(32) = 1/90

----------------------------

Odd numbers are exactly 45.

Hence prob (odd number) = 45/90 = 1/2

-------------------------------------

Multiples of 5 are 10,15,.....95

There are exactly 18 numbers.

Hence P(a multiple of 5) = 18/90 =1/5

Have an amazing day! <3

7 0
3 years ago
Find the value of y if x equals 20? -2x+4y=-4
sammy [17]

x=20

-2(20) + 4(y) =-4

-40+4y=-4

-4y=-36

y=9



4 0
3 years ago
Read 2 more answers
If f(x) = 5x - 3, what is f(x) when x = 9?
vlada-n [284]

Answer: 42.

Step-by-step explanation:

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I need help with Task 1 for now! Will give brainliest and 5 stars :)
Kobotan [32]
What is task 1??????
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