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3 years ago

Simplify the expression (x+5)2

Mathematics

2 answers:

Talja [164]3 years ago

7 0

(X+5)(x+5)
X^2+5x+5x+25
X^2+10x+25

It's wrong to say x^2+25

Lina20 [59]3 years ago

4 0

2x+10, multiply to two each term x and 5

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Find all complex solutions of 5x^2+5x+3=0.

oksian1 [2.3K]

Answer:

see explanation

Step-by-step explanation:

5x² + 5x + 3 = 0 ← in standard form

with a = 5 , b = 5 , c = 3

Solve using the quadratic formula

x = $\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

= $\frac{-5+/-\sqrt{5^2-(4(5)(3)} }{2(5)}$

= $\frac{-5+/-\sqrt{25-60} }{10}$

= $\frac{-5+/-\sqrt{-35} }{10}$

= $\frac{-5+/-\sqrt{-1(35)} }{10}$

= $\frac{-5+/-i\sqrt{35} }{10}$

Then

x = $\frac{-5}{10}$ ± $\frac{1}{10}$ i $\sqrt{35}$ , that is

x = - $\frac{1}{2}$ - $\sqrt{x} \frac{1}{10}$ i $\sqrt{35}$ , - $\frac{1}{2}$ + $\frac{1}{10}$ i $\sqrt{35}$

5 0

3 years ago

Joe’s family has completed 60% of a trip. They have traveled 30 miles.<br> How far is the trip?

galben [10]

The full road trip is 50 miles.
Step-by-step explanation:
Given,
Distance traveled by Joe's family = 30 miles
This represents 60% of the total distance to be traveled.

5 0

3 years ago

Read 2 more answers

F(x)=x^2+1, (4,17) find slope

labwork [276]

Answer:

ITS NOT A LINEAR EQUATION SO IT DOES NOT HAVE A SLOPE

Step-by-step explanation:

7 0

3 years ago

The scale on a map is 1 : 500000 <br> Two towns are 7cm apart on the map

KengaRu [80]

1 : 500,000

multiplied by 7 cm is

7 cm : 3,500,000 cm

= 7 cm : 35000.00 m . . . (100 cm in 1 m)

= 7 cm : 35 km . . . (1000 m in 1 km)

The actual distance between the towns is 35 km.

5 0

3 years ago

What 2 numbers multiplied comes to 149

wel

Answer:

12.20655562 or 12.2

Step-by-step explanation:

Just square 149 $\sqrt{149\\}$

That gives you 12.20655562

Round it to 12.2

4 0

3 years ago