Question

factorise:y^2+4√3y-15

Answer 1

Heya !!!



Y² + 4✓3 Y - 15



=> Y² + 5✓3 Y - ✓3 Y - 15



=> Y ( Y + 5✓3) - ✓3 ( Y + 5✓3)


=> ( Y + 5✓3) ( Y - ✓3).




HOPE IT WILL HELP YOU.... :-)

Answer 2

Hey there!
We will factorise by spliting middle term :

y² + 4√3y - 15

y² - √3y + 5√3 y - 15

y ( y - √3 ) + 5√3 ( y - √3 )

( y - √3 ) ( y + 5√3)

$\boxed{ \boxed { y^2+4 \sqrt{3}y-15 = ( y - \sqrt{3} ) ( y + 5\sqrt{3}) }}$

Hope helped!