Question

12. If x2 + y2 = 34 and xy = 21÷2 find the value of 2(x + y)2 + (x - y)2.​

Answer 1

Answer:

136

Step-by-step explanation:

After solving the equation 2(x^2+y^2+2xy)+(x^2+y^2-2xy)

u get the answer i.e 136