Question

Find the value of x to 2dp in the equation 2x² + 5x = 9​

Answer 1

where x1=-3.71 and x2=1.21

Explanation:

first= 2x+5x-9=0, a=2,b=5,c=-9, x=

`\sqrt{ {5 }^(2) } - 4 * 2( - 9) \: over4`

second x=

`\sqrt[ - 5 + ]{25 + 72} over4`

x=

`\sqrt[ - 5 +4 ]{97}`

`\sqrt[ - 5 - 4]{97}`