t^2 - 9t + 20? | fedest.com

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t^2 - 9t + 20?

whast teh answer

2007-09-05 03:07:01 · 4 answers · asked by edgarec17 1 in Science & Mathematics ➔ Mathematics

t=4,5

2007-09-09 01:20:27 · answer #1 · answered by bansal 4 · 0⤊ 0⤋

What's the question?

Factorise: (t - 5)(t - 4)

Solve t^2 - 9t + 20 = 0:

=> (t - 5)(t - 4) = 0
=> t - 5 = 0
or t - 4 = 0

=> t = 5 or t = 4.

2007-09-05 03:16:36 · answer #2 · answered by steppy333 2 · 0⤊ 2⤋

TÂ² - 9t + 20

tÂ² - 4t - 5t + 20 = 0

t(t - 4) - 5(t - 4) = 0

(t - 5)(t - 4) = 0

- - - - - - - - -s-

2007-09-05 04:04:20 · answer #3 · answered by SAMUEL D 7 · 1⤊ 0⤋

(t - 5) (t - 4) are factors.
There is not an "=" sign so it is incorrect to solve for t.

2007-09-05 03:35:24 · answer #4 · answered by Como 7 · 3⤊ 0⤋