Question

1)x 4 + 3x 2 – 4 = 0

2)4x 4 -37x 2 + 9 = 0
me ajudem

Answer 1

$a)reorganize \\ x \times 4 + 3x \times 2 - 4 = 0 \\ 4x + 6x - 4 = 0 \\ 10x - 4 = 0 \\ 10x = 4 \\ x = \frac{2}{5}$

b) 4x4-37x2+9=0

16x-74+9=0

-58x+9=0

-58x = -9

x= 9/58