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harina [27]
3 years ago
14

7-4x+2(5x+8). If x=-2

Mathematics
2 answers:
Rashid [163]3 years ago
6 0
<span>7-4x+2(5x+8)
plug x=-2 7
-4(-2)+2(5(-2)+8)
7+8+2(-10+8)
7+8+2(-2)
 7+8-4 11</span>
IRISSAK [1]3 years ago
6 0
39 is the answer. :) Your welcome.
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Let A = {1, 2, 3, 4, 5} and B = {2, 4}. What is A ∩ B? (1 point)
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Answer this question
Murljashka [212]

Answer:

a = p * q

b = p * s + q * r

c = r * s

Step-by-step explanation:

In the trinomial ax² + bx + c

a is the coefficient of x²

b is the coefficient of x

c is the numerical term

∵ The trinomial is ax² + bx + c

∵ Its factors are (px + r) and (qx + s)

∴ ax² + bx + c = (px + r)(qx + s)

∵ (px + r)(qx + s) = (px)(qx) + (px)(s) + r(qx) + (r)(s)

∴ (px + r)(qx + s) = pqx² + (psx + qrx) + rs

∴ ax² + bx + c = pqx² + (ps + qr)x + rs

→ By comparing the two sides

∵ ax² = pqx² ⇒ divide both sides by x²

∴ a = pq

∵ bx = (ps + qr)x ⇒ Divide both sides by x

∴ b = ps + qr

∴ c = rs

∴ a = p * q

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