Question

factorise x^2-3 root 5-20

Answer 1

Answer:

Question:-

x²-3√5x-20

Step-by-step explanation:

Solution:-

We use the factorisation method,Picking the middle term as the sum and the other two numbers as the product of the equation.

x²-3√5x-20

Sum=-3√5

Product=-20×1---(x)

=>-20=Product

-4√5×√5=-4×5=-20==>Product

-4√5+√5=-3√5==>Sum

=} x²-4√5x+√5x-20=0

x(x-4√5)+√5(x-4√5)=0

x+√5=0,x=-√5

x-4√5=0,x=4√5

HOPE YOU UNDERSTOOD™✓

Answer 2

Answer:

refer to the above attachment for the solution