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Grayscale · Answer 1 · 2019-12-18T09:30:11+0000

Solve the equation

f(t) = 0

So we have:

${t}^(2) - 13t + 36$
Factor, 2 numbers of which the sum is -13 and multiplying gives 36, these two are -4 and -9
So solve:

(x - 4)(x - 9) = 0

The solutions:
4 and 9

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