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Fed [463]
3 years ago
14

((x+2)+1)^2 hasilnya?

Mathematics
1 answer:
Julli [10]3 years ago
7 0
((x + 2) + 1)^2
(x + 2 + 1)^2
(x + 3)^2
(x + 3)(x + 3)
x(x + 3) + 3(x + 3)
x(x) + x(3) + 3(x) + 3(3)
x^2 + 3x + 3x + 9
x^2 + 6x + 9
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To prove a similarity of a triangle, we use angles or sides.

In this case we use angles to prove

∠ACB = ∠AED (Corresponding ∠s)
∠AED = ∠FDE (Alternate ∠s)

∠ABC = ∠ADE (Corresponding ∠s)
∠ADE = ∠FED (Alternate ∠s)

∠BAC = ∠EFD (sum of ∠s in a triangle)

Now we know the similarity in the triangles.

But it is necessary to write the similar triangle according to how the question ask.

The question asks " ∆ABC is similar to ∆____. " So we find ∠ABC in the prove.

∠ABC corressponds to ∠FED as stated above.
∴ ∆ABC is similar to ∆FED

Similarly, if the question asks " ∆ACB is similar to ∆____. "
We answer as ∆ACB is similar to ∆FDE.

Answer is ∆ABC is similar to ∆FED.
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Answer:

1/3

Step-by-step explanation:

We have 6 slices

2 are yellow

P ( yellow) = number of yellow / total

                 = 2/6

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