What is (5x-2)(2x+7) do you know

Mathematics

2 answers:

densk [106]2 years ago

5 0

Answer:

integral_(-7/2)^(2/5) (7 + 2 x) (-2 + 5 x) θ(-(7 + 2 x) (-2 + 5 x)) dx = -19773/200 = -98.865

Paladinen [302]2 years ago

4 0

Answer:

$(5x - 2)(2x + 7) \\ 10 {x}^{2} + 35x - 4x - 14 \\ 10 {x}^{2} + 31x - 14$

I hope I helped you^_^

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In circle pp, ad¯¯¯¯¯ad¯ is a diameter and bc¯¯¯¯¯bc¯ is perpendicular to ad¯¯¯¯¯ad¯ at ee. if pd=7pd=7 and ae=4ae=4, find cece.

kvv77 [185]

See the attached figure.

ad is a diameter of the circle with center p

∵ pd = radius = 7 ⇒⇒⇒ ∴ ad = 2 * radius = 2 * 7 = 14
∵ ae = 4 ⇒⇒⇒ ∴ ed = ad - ae = 14 - 4 = 10
∵ ad is a diameter
Δ acd is a triangle drawn in a half circle
∴ Δ acd is a right triangle at c
∵ bc ⊥ ad at point e
By applying euclid's theorem inside Δ acd
∴ ce² = ae * ed
∴ ce² = 4 * 10 = 40
∴ ce = √40 = 2√10 ≈ 6.325

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3 years ago

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dolphi86 [110]

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