Question

can someone check and tell me what i did wrong? or solve me solve the second example please ?

Answer 1

question:
t^2-7t-7=0
u took
t^2-3t-7=0

Answer 2

no its a diferent problem

Answer 3

the one with no work its a separate problem.another example

Answer 4

what is in yellow was the part that i got wrong

Answer 5

t-3 ?
it should be (t-3/2 )^2

Answer 6

-3t? it should be (-3/2)^2?

Answer 7

gives me 2.25

Answer 8

i will write steps, see whether u understand...
t^2 - 3t + 9/4 = 7+9/4
(t-3/2)^2 = (28+9)/4
(t-3/2)^2 = (37)/4

t-3/2 = sqrt{37/4}
can u proceed...?

Answer 9

+ or -sqrt{37/4}

Answer 10

add 3/2 to both sides?

Answer 11

yes, but did u understand what i did ?

Answer 12

u got 197 incorrect, it should be 37

Answer 13

yup i wrote the steps they are clear u square in the forth step and get t-2/2 on left and +/-sqrof 37/4

Answer 14

yes! that was the asnwer :) how do i get that?

Answer 15

oh wait 7/1 +9/4?

Answer 16

right

Answer 17

because 7+9/4 = 37/4 and not 197/4
yes.

Answer 18

how did you get 28?

Answer 19

can you tell me how is that added?

Answer 20

nvm i got it!:)