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Ket [755]
3 years ago
9

What is (3xx-1)(8xx+7)

Mathematics
1 answer:
wariber [46]3 years ago
4 0

Answer:24^4+13x²-7

Step-by-step explanation: calculate the products

(3x²-1)×(8x²+7)

calculate the parentheses

24x^4+21x^2-8x^2-7

collect like terms

solution

24x^4+13x^2-7

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Shkiper50 [21]
Angie buys 1 software package and 3 months of game play
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price of each software package = $20
total cost = $117
cost of one month game play = ?
let y is the cost of one month play
Angie buys 3 months game play and paid $20 = 20 + 3y
Kenny buys 4 months game play and paid $20 = 20 + 4y
total cost of both is $117
So the equation becomes,
(20 + 3y) + (20 + 4y) = 117
7y + 40 = 117
7y = 117 - 40
7y = 77
dividing with 7 on both sides, we get
y = 11
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Answer:

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