Question

Find y^2+1upon y^2 if y +1upon y is 5
Pz fast

Answer 1

Answer:

23

Step-by-step explanation:

given y+ 1/y = 5

squaring both sides : (y+1/y) ^2 = 5^2 = 25

using standard formula :(a+b) ^2= a^2 + b^2 + 2× a× b

y^2 + (1/y)^2 + 2× y× 1/y = 25

y^2 + 1/(y)^2 = 25-2 = 23

this our required answer