Question

Solve x4 – 13x2 + 42 = 0 ​

Answer 1

Answer:

The answer of this question is = 60

Answer 2

Answer:

x⁴-13x²+42=0

x⁴-7x²-6x²+42=0

x²(x²-7)-6(x²-7)=0

(x²-7)(x²-6)=0

_____________.

•°• x²-7=0

x²=7.

x=√7

x²-6= 0

x= √6

•°• { √7,√6}