identities

[radiant citrus]

equate the coefficients or x

so 41 = a

[blazing wasp]

what

[radiant citrus]

ok, what are the terms that have x in it?

[blazing wasp]

all

[radiant citrus]

no

40 doesn’t have an x, neither does 3b or 13

[hexed cliff]

The coefficient of x on left hand side is 41 and on the right hand side is a so if you’re saying they’re identical then 41 must be equal to a

[blazing wasp]

oh i though you meant at the start

[radiant citrus]

there’s 41x and ax

which have an x

[blazing wasp]

so 41 = a as they both have an x?

[radiant citrus]

yea

[blazing wasp]

oh i see

[radiant citrus]

what u just did is equated the coefficients of x

now u have to equate the constants

40 + 3b = 13

solve for b

[blazing wasp]

oh i see

[radiant citrus]

27 = 3b, b=9

[blazing wasp]

thank you

[hexed cliff]

-9

[radiant citrus]

https://m.youtube.com/watch?v=l54us4Q7nNY

[blazing wasp]

ye its negative

[radiant citrus]

this video will help u

[blazing wasp]

13 - 40

[radiant citrus]

yh -9 mb

[blazing wasp]

cheers

i hadnt done this topic before but they set it over the summer