2xy^2 + x^2y^4 +1 = ??
Pls worth 100 POINTS :

Notice that

x²y⁴ + 2xy² + 1 = (xy²)² + 2xy² + 1²

can be factored as a sum of squares:

x²y⁴ + 2xy² + 1 = (xy² + 1)²

which follows from the identity

(a + b)² = a² + 2ab + b²

with a = xy² and b = 1.

step-by-step explanation:

answers available in this download

(pearson%2c%25202012)%2520bbs.pdf& usg=aovvaw1obmtxnfghfgxhx0urh_je

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.