Question

Please explain the answer with all proper steps. Then I will mark you brainliest.

Answer 1

Answer:

6)X=√3-2

plz mark as brainliest

Answer 2

Answer:

6.

√2 +√√x = 3

squaring both sides

2+√x = 9

√x = 9 -2

√x = 7

x = 49

7.

square root 8-2√15

assuming

√8 -2√15 = √a + √b

squaring both sides, we gets

8 - 2√15 = a + 2√ab + b

8 - 2√15 = a+b + 2√ab

Now here, 8 is related to a+b &

15 is related to ab

a+b = 8 ; a×b = 15

5+3 = 8;. 5×3 = 15

a = 5 , b = 3

So the answer of

√8 - 2√15 = √a + √b

=√8 - 2√15 = √5 - √3 (minus sign due to the minus sign in question)

8. 5√3 - 3√12 + 2√75

= 5√3 -3 √2×2×3 + 2√5×5×3

= 5√3 - 3×2√3 + 2×5√3

= 5√3 -6√3 + 10√3

= 9√3

10. √1+x/144 = 13/12

Squaring both sides

= 1+x/144 = 169/144

= (144+x)/144 = 169/144

= 144 + x = 169. (144 will be cancelled by the other)

= x = 169 - 144

= x = 25