Question

If x²+y² = 13 and xy = 6, find the value of each expression.
1) x+y
2) x-y
3) x⁴+y⁴
(who will give correct answer with full process they will mark as brainly)​

Answer 1

Answer:

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(x+y)² = x²+y²+2xy

(x+y)² = 13 + 2 x 6

(x+y)² = 25

(x+y) = √25

x+y = 5

Math

5 points

(x-y)² = x²+y² - 2xy

(x-y)² = 13 - 2 x 6

(x-y)² = 1

(x-y)=√1

x - y = ± 1 [-1 or +1]

x²+y² = (x²+y²)² - 2(x²)* (y²)

x+y² = 13² - 2* (xy)²

x+y = 13² -2 * 36

x+y = = 97

Hope this helps you !!

Answer 2

Answer:

Photosynthesis is the process in which plants make their food in the presence of carbon dioxide and water.