Question

Pls help! thank you!

Answer 1

Using the zero product property, we can set each factor equal to zero.

First Factor
`x^(4)+5x^(2)-36`

`x^(4)+5x^(2)-36=0\\(x^(2)+9)(x^(2)-4)=0\\x^(2)+9=0, x^(2)-4=0\\x=\pm 3i, x=\pm 2`

Second Factor
`2x^(2)+9x+5`

Using the quadratic formula, we get
`x=(-9 \pm √(41))/(4)`.