1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
creativ13 [48]
3 years ago
7

Plz help on rationalising surds

Mathematics
1 answer:
Fittoniya [83]3 years ago
3 0
(√5 + 3)² / √20=
((√5 + 3)² / √20)(√20/√20)=
(√20(√5 + 3)²) / (√20)²=
√20(5+6√5+9) /20=
√20 (14+6√5) /20=
(14√20 +6√100) /20=
(14√20 +60) / 20=
(14(√4√5) + 60) /20=
(14(2)(√5)+60) / 20=
(28√5+60) /20=
(7√5+15) / 5

Answer:(√5 + 3)² / √20= <span>(7√5+15) / 5</span>
You might be interested in
Please help with this question?
lesya [120]

Answer:42, 3, 2, 15

Step-by-step explanation:

6 0
3 years ago
Which of the following is equal to the expression listed below?
Bezzdna [24]

Answer:

first one is correct................

5 0
3 years ago
Read 2 more answers
-5=-10+ find the missing value
liraira [26]

Answer:

the missing values is 5

I hope it's helps you to

7 0
3 years ago
Read 2 more answers
PLEASE HELP :D ( these are multi step equations )
AnnyKZ [126]
For the first problem the answer is -5/2

2x−7+10=−2

Step 1: Simplify both sides of the equation.
2x−7+10=−2
2x+−7+10=−2
(2x)+(−7+10)=−2

(Combine Like Terms)
2x+3=−2

Step 2: Subtract 3 from both sides.
2x+3−3=−2−3
2x=−5

Step 3: Divide both sides by 2.
2x/2=−5/2
x=−5/2

Answer:
x= -5/2
3 0
3 years ago
Can you help out with this ​
marusya05 [52]
All you have to do is plug in the 2 for x which gives you 8 as the answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • You plan to take a 1150​-mile trip in your​ car, which averages 20 miles per gallon. How many gallons of gasoline should you exp
    12·1 answer
  • Using the volume of a cylinder formula. Calculate the volume of the cylinder. *
    5·1 answer
  • The Candy Store held a raffle, and Matt won the grand prize. He won a gift card to the store, as well as a bag of giant lollipop
    12·2 answers
  • Which lists these numbers in order from least to greatest? –15.8, 134, 2.13, –2.457, 32.6
    6·2 answers
  • What is the slope of the line segment? <br> answer choices <br> 1/4 <br> 1/4 <br> 4 <br> –4
    8·2 answers
  • I need help will mark brainlist
    11·1 answer
  • 5 cooks, 13 waiters and 4 other staff work at a restaurant. What is the ratio of cooks to waiters to other staff?
    12·1 answer
  • Each cup holds 1/5
    12·2 answers
  • The swim team members each swam less than 55 yards as a warm up Saturday morning.
    7·1 answer
  • A triangular bandana has an area of 78 square inches. The height of the triangle is 9 3 4 inches. Enter and solve an equation to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!