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3 years ago

What is (2x) exponent of 2 + 3x exponent of 2 - y

Mathematics

1 answer:

Lelu [443]3 years ago

8 0

(2x)^2 + 3x^2 - y = (2(3))^2 + 3(3)^2 - 12 = (6)^2 + 3(9) - 12 = 36 + 27 - 12 = 51.

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37 1/2 % as a decimal

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Find the cost per ounce of a gold alloy made from 30 oz of pure gold that costs $1290 per ounce and 60 oz of an alloy that costs

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27. If three more than one-fourth of a number is

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Answer:

Step-by-step explanation:

let the number be n , then

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3 years ago

What is (-i)^5? A. 1 B. i C. -1 D. -i

jenyasd209 [6]

Answer:

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3 years ago

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P(x)=Third-degree, with zeros of −3, −1, and 2, and passes through the point (1,12).

Mila [183]

Answer:

The polynomial is:

$p(x) = -x^3 - 2x^2 + 5x + 6$

Step-by-step explanation:

Zeros of a function:

Given a polynomial f(x), this polynomial has roots $x_{1}, x_{2}, x_{n}$ such that it can be written as: $a(x - x_{1})*(x - x_{2})*...*(x-x_n)$ , in which a is the leading coefficient.

Zeros of −3, −1, and 2

This means that $x_1 = -3, x_2 = -1, x_3 = 2$ . Thus

$p(x) = a(x - x_{1})*(x - x_{2})*(x-x_3)$

$p(x) = a(x - (-3))*(x - (-1))*(x-2)$

$p(x) = a(x+3)(x+1)(x-2)$

$p(x) = a(x^2+4x+3)(x-2)$

$p(x) = a(x^3+2x^2-5x-6)$

Passes through the point (1,12).

This means that when $x = 1, p(x) = 12$ . We use this to find a.

$12 = a(1 + 2 - 5 - 6)$

$-12a = 12$

$a = -\frac{12}{12}$

$a = -1$

Thus

$p(x) = -(x^3+2x^2-5x-6)$

$p(x) = -x^3 - 2x^2 + 5x + 6$

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3 years ago