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2 years ago

Subtract: (–3x2 + 7 – 2x) – (6 + 7x – 4x2)

Mathematics

1 answer:

Aneli [31]2 years ago

5 0

The subtraction of the given expression will be (x²-9x +1).

<h3>What is subtraction?</h3>

The method of removing or deleting anything from the given set will be defined as subtraction. It is represented by the negative sign '-'.

The subtraction will be calculated as:-

E = (–3x² + 7 – 2x) – (6 + 7x – 4x²)

Arrange the terms in the above expression.

E = ( -3x²+4x²-2x-7x-6+7)

E = ( x² - 9x + 1 )

Therefore the subtraction of the given expression will be (x²-9x +1).

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What is the vertex of f (x) = 5x^2+20x-16

sergeinik [125]

Answer:

vertex = (- 2, - 36)

Step-by-step explanation:

Given a parabola in standard form : y = ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

f(x) = 5x² + 20x - 16 is in standard form

with a = 5, b = 20 and c = - 16

$x_{vertex}$ = - $\frac{20}{10}$ = - 2

Substitute x = - 2 into f(x) for corresponding y- coordinate

f(- 2) = 5(- 2)² +20(- 2) - 16 = 20 - 40 - 16 = - 36

vertex = (- 2, - 36)

3 0

3 years ago

Read 2 more answers

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meriva

f(x) = sin(x)

Domain (–∞, ∞)

Range [–1, 1]

y = arcsine(x)

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3 years ago

Rationalize the denominator of (click photo)

Ede4ka [16]

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so it is the last option

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3 years ago

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3 years ago

Which expression is equivalent to 5^3?

AleksAgata [21]

Answer:

C and D

Step-by-step explanation:

5^3 - 5^0 = 125 - 1 = 124, so it's not A

5^12 / 5^4 = 5^(12-4) = 5^8, so it's not B

5^7 * 5^-4 = 5^(7+(-4)) = 5^3, so it can be C

5^0 * 5^3 = 5^(0+3) = 5^3, so it can be D

5 + 5^2 = 5 + 25 = 30, so it can't be E

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2 years ago