Question

1st question :If xy = 8, x+y = 10 find x^2 +y^2
2nd question: if x= 1÷3+2√3 find:
a) x + 1÷x^2
b) x^2 + 1÷x^2

Answer 1

Answer:

i dont know

very hard hdjsjjsjjjsjwiwjjfbx

Answer 2

Answer:

1st answer is 44

Step-by-step explanation:

we can write x to the power of 2 + y to the power of 2 as

(x+y)whole square=x square +y square +2xy

=

${8}^{2} = {x}^{2} + {y}^{2} + 2(10) \\ 64 - 20 = {x }^{2} + {y}^{2} \\ 44 = {x}^{2} + {y}^{2}$