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sergejj [24]
3 years ago
5

SPECIAL POLYNOMIAL PRODUCTS

Mathematics
1 answer:
victus00 [196]3 years ago
6 0
1) (m-n)(m+n)
= m^2 +mn-nm-n^2
= m^2-n^2

2) (z-3)(z+3)
= z^2+3z-3z-9
= z^2-9
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I need help with this question can some please help me !
nalin [4]

Answer:

you just shoed the answers

Step-by-step explanation:

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3 years ago
What is the answer to the problem 21+40(2x-3)
12345 [234]

Answer:

x = 1.2375 or 99/90

Step-by-step explanation:

<u>Step 1:  Distribute</u>

21 + 40(2x - 3)

21 + 80x - 120

<u>Step 2:  Combine like terms</u>

21 + 80x - 120

80x - 99

<u>Step 3:  Solve for x</u>

80x - 99 + 99 = 0 + 99

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Find the area of a circle with radius equal to 6.<br><br> A =
anyanavicka [17]

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Step-by-step explanation:

hello :

A= πr²     r = 6

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8 0
4 years ago
Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio
adoni [48]

Answer:

a : b = 4 : 3

Step-by-step explanation:

(mark as brainlist answer)

According to the given condition is the question :

Two numbers a and b are such that the sum of 5% of a and 4% of b is two-third of the sum of 6% of a and 8% of b

⇒ (5% of a) + (4% of b) = (2/3) × [(6% of a) + (8% of b)

⇒ 0.05a + 0.04b = 2/3 × (0.06a + 0.08b)

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⇒ 0.03a = 0.04b

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⇒ a : b = 4 : 3

8 0
3 years ago
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