Question

Maths Factorise question​

Answer 1

Answer:

x⁴-11x²-80=0

x⁴-16x²+5x²-80=0

x²(x²-16)+5(x²-16)=0

(x²+5)(x²-16)=0       → FACTORISATION

So,

x²+5=0                  and         x²-16=0

∴x=±√-5                               ∴x=±4         →    Solutions

Answer 2

Answer:

Step-by-step explanatiodon:

Maths should be by yourself only do a hope u can do well than others