Question

Two sets of equatic expressions are shown below in various forms:

Line 1: x2 + 3x + 2 (x + 1)(x + 2) (x + 1.5)2 − 0.25
Line 2: x2 + 5x + 6 (x + 2)(x + 3) (x + 2.5)2 + 6.25

Which line contains three equivalent expressions?

Line 1 only
Line 2 only
Both Line 1 and Line 2
Neither Line 1 nor Line 2

Answer 1

@DanJS

Answer 2

keep the first entries the same, expand out the second and third and compare those to the first

Answer 3

how would or do that?

Answer 4

(x + 1)(x+ 2) = x^2 + 2x + x + 2
= x^2 + 3x + 2

that one matches

Answer 5

(x+1.5)^2 - 0.25 = x^2 + 1.5x + 1.5x + 2.25 - 0.25
= x^2 + 3x + 2

That one is also the same, so line 1 is all same

Answer 6

test the second line

Answer 7

ok, but I'm still not sure how to test the second line but i will give it a shot

Answer 8

yea I'm not sure the 1st line looks easier this one does not trust me I'm not trying for you to do my work but I'm still not sure how to do the second lien the first line looked a little easier though :/ @DanJS

Answer 9

\[(x+2.5)^2 + 6.5 = x^2+2.5x+2.5x+6.25 + 6.25\]

Answer 10

that doesn't simplify to the same as the first entry line 2

Answer 11

??? @DanJS

Answer 12

are you saying the answer a ?

Answer 13

@welshfella

Answer 14

yes

Answer 15

wait so line b I'm sorry just confirming @DanJS

Answer 16

i mean to say lien 1 @DanJS

Answer 17

yea