Question

can u please split it

Answer 1

$hey \: mate \: here \: is \: your \: answer$
$x {}^{2} - 6x + 9$
$x {}^{2} - (3 + 3)x + 9$
$x {}^{2} - 3x - 3x + 9$
$x(x - 3) - 3(x - 3)$
$(x - 3)(x - 3)$
$hope \: it \: helps.....$

Answer 2

Answer:

Step-by-step explanation:

root mean square speed of hydrogen at 300k is same of helium at _____ temperature

As we know the formula of root mean square

√3RT'/M'=√3RT/M

squaring on both sides

T'/M'=T/M

T'/4=300/1

T'=1200 Kelvin