Question

Factorise (y^4 - 8y^2 + 16)
Optipns:
A. (y^2+4)(y-2)(y+2)
B.(y-1)(y+4)(y-1)(y+4)
C.(y-2)(y-2)(y-2)(y-2)
D.(y+2)(y+2)(y-2)(y-2)


Answer the correct option please. ​

Answer 1

Answer:

option c

Step-by-step explanation:

y⁴-8y²+16

y⁴-4y²-4y²+16

y²(y²-4)-4(y²-4)

(y²-4)(y²-4)

(y+2)(y-2)(y+2)(y-2)

(y+2)(y+2)(y-2)(y-2)