(im tryna do this booklet with some grade 7/8/9 questions and the start are about sruds and rationalising and expanding square rooted numbers in brackets
#how to do this?
onyx flare
idk how to do them yet, i thought id just multiply them as if they were algebraic numbers
signal hollow
(a+b)(c+d) = ac + ad + bc + bd
FOIL
multiply First 2 terms of each bracket (ac)
multiply the 2 Outer terms (ad)
multiply the 2 Inner terms (bc)
multiply the Last 2 terms of each bracket (bd)
onyx flare
yes ik that but what about the square roots
do i just multiply them as if they were algrebraic numbers or?
inner falcon
do i just multiply them as if they were algrebraic numbers or?
$\left( \sqrt{3} \right) ^2 = 3$
warm pondBOT
Hen
