If x^4-y^4=-15 and x^2-y^2=-3, what's the value of x^2+y^2?
i need work shown too please

answer: 20

step-by-step explanation: subtract the minimum date value from the maximum data value to find the date range. in this casem the date range is 42 - 22 = 20

hope this ! : ) ~zane

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

answer: get jesus in your life

step-by-step explanation:

the answers are in the images, i received 100% on this assignment. hope this !