Question

solve Q30 please it in copy and step by step

Answer 1

30.
Here we go,

$2 {x}^{2} + 3 \sqrt{5} x + 5 \\ = 2 {x}^{2} + 2 \sqrt{5} x + \sqrt{5} x + 5 \\ = 2x(x + \sqrt{5} ) + \sqrt{5} (x + \sqrt{5}) \\ = (2x + \sqrt{5} )(x + \sqrt{5} )$

Answer 2

So.30 2x⁴+3√5x+5

solve by Formula Method


-b±√b²-4ac/2a

-(3√5)±√(3√5)²-4×2×5/2×5
-3√5±(45-40)/10

-3√5±5/10
±(-3√5/2)


On taking positive

+(-3√5)+x=0
x=3√5

On taking Negative

-(-3√5)+x=0

x= -3√5