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4 years ago

7

I've already posted this once, and haven't got an answer, so I am posting it again just in case my question got lost in the sea

of other questions. I'd be really grateful if I got any help.

1 answer:

adelina 88 [10]4 years ago

5 0

I know the answer to 17 is the measure of each angle is 45° but i’m not sure about the rest sorry

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What are the solutions of x^2 - 2x + 10 = 0?<br><br>

dybincka [34]

Answer:

C. x = 1 + 3i or x = 1 - 3i

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra I</u>

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

<u>Algebra II</u>

Imaginary Roots: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

x² - 2x + 10 = 0

<u>Step 2: Identify Variables</u>

a = 1

b = -2

c = 10

<u>Step 3: Find roots</u>

Substitute [Quad Formula]: $x=\frac{2\pm\sqrt{(-2)^2-4(1)(10)} }{2(1)}$
Exponents: $x=\frac{2\pm\sqrt{4-4(1)(10)} }{2(1)}$
Multiply: $x=\frac{2\pm\sqrt{4-40} }{2}$
Subtract: $x=\frac{2\pm\sqrt{-36} }{2}$
Factor: $x=\frac{2\pm\sqrt{-1} \sqrt{36} }{2}$
Simplify: $x=\frac{2\pm6i }{2}$
Factor: $x=\frac{2(1\pm3i) }{2}$
Divide: $x=1\pm3i$

5 0

3 years ago

A(x + 1) - b(x + 1) - x - 1

Andrei [34K]

Answer:

Step-by-step explanation:

Solution

I'm assuming you want this simplified. If not leave a note.

a(x + 1) - b(x + 1) - x - 1 remove the brackets

ax + a - bx - b - x - 1 gather like terms

ax - bx - x + a - b - 1

x(a - b - 1) + (a - b - 1) Use the distributive property to simplify

Answer

(x + 1)(a - b - 1)

The common factor is (a - b - 1). That can be pulled out on either side of the isolated + sign

8 0

2 years ago

PLEASE HELP ME ASAP!!!! <br> Will mark brain list!!!!!! please help asap!

Goryan [66]

Answer:(2,4)

Explanation: hope this is what the question was asking I’m in 9th grade

5 0

3 years ago

Simplify <br> 3sin 0+ 2sin 0- 4sin0+ 5sin0<br> step by step

Ymorist [56]

Answer:

0

Step-by-step explanation:

3x0+2x0-4x0+5x0

0

5 0

3 years ago

Read 2 more answers

Solve 7x – 2y = –3 <br> 14x + y = 14 a. (4,5/7) b. (4,7/5) <br> c. (5/7,4) d. (7/5,4)

den301095 [7]

7x - 2y = -3 . . . (1)
14x + y = 14 . . . (2)
(1) x 2 => 14x - 4y = -6 . . . (3)
(2) - (3) => 5y = 20
y = 20/5 = 4
From (1); 7x - 2(4) = -3
7x - 8 = -3
7x = -3 + 8 = 5
x = 5/7

Solution = (5/7, 4)

3 0

4 years ago

Read 2 more answers