Register
If x2+y2 = 12 and x2-y2=18, what is the value of x4-y4?
107k views
0 votes
If x2+y2 = 12 and x2-y2=18, what is the value of x4-y4?

User Greenish
by
4.8k points

1 Answer

3 votes

Answer:

Step-by-step explanation: add the equations

2x² = 30

x² = 15

y² = 12 - 15

= -3

x4 -y4 = 15² - (-3)²

= 216

User Pablo Ezequiel Leone
by
5.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.3m questions

6.9m answers

Other Questions

Pizza planet is running a special 3 pizzas for 16.50. What is the unit rate for one pizza
What number is halfway between 0 and 18
If the 9-inch wheel of cheese costs $18.60, what is the cost per square inch? If the cost is less than a dollar, put a zero to the left of the decimal point?
how long Will it take for $7000 investment to grow to $7553 and the annual rate of 3.4% compounded quarterly assume that no withdrawals are made
I need to simplify this expression.
Link Copied!