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miss Akunina [59]
3 years ago
9

What is the sum of 2m^2+3m-4 and m^2-3m-2

Mathematics
1 answer:
Viefleur [7K]3 years ago
3 0

Answer:

3m² - 6

Step-by-step explanation:

Summing the 2 expressions

2m² + 3m - 4 + m² - 3m - 2 ← collect like terms

= (2m² + m²) + (3m - 3m) + (- 4 - 2)

= 3m² + 0 + (- 6) = 3m² - 6

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Answer:

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Step-by-step explanation:

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Find two factors of the first number such that their product is the first and the sum is the second for 51,20
anygoal [31]

The factors are 17 and 3.

The given conditions are two factors of the first number, 51 such that their product is 51 and the sum is the second number 20.
let say, the factors are x and y.

therefore, we can write, x.y = 51 ... (1)  and x + y = 20 .... (2)

Putting  the value of x from equation (2) in  equation (1) we get,

(20 - y).y = 51

or, 20y - y² = 51

or, y² - 20y + 51 = 0

or, y = 17, 3

then x = 3,17

Therefore, The factors are 17 and 3.

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brainly.com/question/24182713

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2 years ago
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3 years ago
X(x+5)+6(x+5)=(x+5)(?)<br> help
Karo-lina-s [1.5K]

Answer:

x = -25/12 or x = -0.2

Step-by-step explanation:

x(x+5)+6(x+5)=(x+5)

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x^2 + 5x + 6x + 30 = x + 5

Combine

x^2 + 11x + 30 = x + 5

Subtract 1x from both sides

x^2 + 10x + 30 = 5

Subtract 30 from both sides

12x = -25

Divide 12 on both sides

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3 years ago
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