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Ratling [72]
3 years ago
15

Factor the trinomial: 4x2 - 8x - 5

Mathematics
2 answers:
shtirl [24]3 years ago
6 0
Correct answer is A.

(2x + 1)(2x - 5)
\\2x(2x-5)+1(2x-5)
\\4x^2-10x+2x-5
\\4x^2-x-5
Juliette [100K]3 years ago
5 0

you can always check by expanding the answers to see what matches

well, you can verify yourself by expanding the answer to check what matches

4x2 - 8x - 5 = 4x2 + 2x -10x -5
= 2x(2x+1) - 5(2x+1)
= (2x+1)(2x-5)
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If x = -2, then x2-7x+10 equals<br> 00<br> O 20<br> 028
sleet_krkn [62]
20, you just need to substitute the x value in the equation
(-2)2-7(-2)+10=
=20
7 0
3 years ago
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kherson [118]

Answer:

Its 25%

Step-by-step explanation:

6 0
3 years ago
Determine whether the vectors u and v are parallel, orthogonal, or neither. u = (5,4) v = (-10,9)
12345 [234]

Answer:

Neither

Step-by-step explanation:

5 x -10 = -50

4 x 9 = 36

-50 + 36 = -14 and therefore can not be orthogonal

sqrt(25+16)=sqrt(41)

sqrt(100+81)=sqrt(181)

sqrt(41) x sqrt(181) is not equal to -14 so therefore it is not parallel

So the answer is then neither

6 0
3 years ago
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Other than 1, what are the perfect square factors for 792? From least to greatest.
Reika [66]

Answer:

Factors of 792: 1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 66, 72, 88, 99, 132, 198, 264, 396, 792. Factor pairs: 792 = 1 x 792, 2 x 396, 3 x 264, 4 x 198, 6 x 132, 8 x 99, 9 x 88, 11 x 72, 12 x 66, 18 x 44, 22 x 36 or 24 x 33.

Step-by-step explanation:

7 0
3 years ago
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Can you solve this and show work I wanna check if I got the answer right (I got -5)
marissa [1.9K]

-2(3y + 5) = -4

Distribute

-6y - 10 = -4

Add

-6y = 6

Divide

y = -1

Multiply

5y = -5

You got it right.

4 0
3 years ago
Read 2 more answers
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