Question

please solve i will mark you all as brainliest​

Answer 1

Answer:

8.a) 7+2√10

b)6-2√55

9) x=1

10) x+y

Step-by-step explanation:

8.a)  (√5+√2)²

(√5)²+(√2)²+(2*√5*√2)

5+2+2√10

=7+2√10

b)  (√11-√5)²

(√11)²-(2*√11*√5)+(√5)²

11 - 2√55 + 5

=6-2√55

9)5^3x =125

5^3x = 5^3

We can equate the powers since bases are the same.

So, 3x=3

x=1

10) (x^-1  +  y^-1)^-1

(1/x+1y)^-1

=x+y

Hope it helped!

Answer 2

Answer:

Okie NYC 2 text ya...

Step-by-step explanation:

Let z = x² - 2x

Then \sf F = z² - 2 z - 3F=z²−2z−3

\sf = (z - 3) (z + 1) =(z−3)(z+1)

\sf = ( x² - 2x - 3) (x² - 2x + 1)=(x²−2x−3)(x²−2x+1)

\sf = (x -3 ) (x + 1) (x - 1)² =(x−3)(x+1)(x−1)²