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3 years ago

What is the first step in solving x^2+2x+3=0

Mathematics

2 answers:

Westkost [7]3 years ago

7 0

First subtract three from both sides. then you have $x^{2}$ +2x=-3 and you solve from there

Neporo4naja [7]3 years ago

6 0

Is the question asking by completing the square?
X^2+2X+3=0
X^2+2x+1+2=0
(x+1)^2+2=0
(x+1)^2=-2
x+1=squr root 2i or x+1=-sqr root 2i

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What is the answer?

Dmitrij [34]

Answer:

read explanation

Step-by-step explanation:

rearrange equations to form y=mx+b

-2x+4=2y

-x+2=y

-y=-2x-5

y=2x+5

use these equations to find slope and y intercepts, and match those with the right graph

slope of first: -1

slope of second: 2

y-int of first: 2

y-int of second:5

3 0

2 years ago

Write the mixed number as an improper fraction.<br> -4 1/5

Sophie [7]

-(4 1/5)
5(4)+1 = 21
Thus the answer would be -21/5

4 0

3 years ago

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A shopper bought shoes marked $40. the sales tax is 8%. how much did the shopper pay in all

guajiro [1.7K]

8% equals 3.2. If you add $40 plus $3.2 cents that shopper would of paid $43.2 cents.

6 0

2 years ago

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What is equivalent to 7-2(x+2)<-4-3(1-x)

Alex_Xolod [135]

after solving $7-2(x+2)$ we get $x>2$

Step-by-step explanation:

We need to find the value of x in:

$7-2(x+2)$

Solving:

$7-2(x+2)$

So, after solving $7-2(x+2)$ we get $x>2$

Keywords: Solving the expression

Learn more about Solving the expression at:

#learnwithBrainly

3 0

2 years ago

Simplify by dividing negative three over eight divided by five over nine.

goblinko [34]

Answer:

$\frac{-27}{40}$

Step-by-step explanation:

First we need to write in correct form :

$\frac{-3}{8}:\frac{5}{9}$

We know how to divide fractions. If we can divide numerator by numerator, denominator by denominator, we just do it. In this example we can not do that.

So, we rewrite first fraction and multiply by reciprocal second ( numerator and denominator change place)

$\frac{-3}{8} *\frac{9}{5}$

Now, multiply numerator by numerator, denominator by denominator :

$\frac{-27}{40}$

8 0

2 years ago

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