Question

can't able to understand please explain with full staps.

from the quadratic equations form the roots given below

1) 2-√5 , 2+√5.

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Answer 1

a+b and a-b

is

A sq. - B sq.

so it will be

2 sq. - √5 sq.

square of 2 is 4

and square of root 5 is 5

so

4-5

= -1

Answer 2

Step-by-step explanation:

here we have to use the formula (a²-b²)

so

2-√5,2+√5

here we have to use the formula

(2²-√5²) [roots will be cancelled because power is given square ]

then

4-5

=1 ( ans)

hope u understood if not tell me