Find all the zeroes of 2⁴x-3x³-3x²+6x-2 if you know that two of its zeores √2are

and √-2​

1 thought on “Find all the zeroes of 2⁴x-3x³-3x²+6x-2 if you know that two of its zeores √2are <br /><br />and √-2​”

1. Answer:

   Bat = Rs 1800 ✬

   ✬ Ball = Rs 100 ✬

   Step-by-step explanation:

   Given:

   Cost of 7 bats and 6 balls is Rs 13200.

   Cost of 3 bats and 5 balls is Rs 5900.

   To Find:

   What is the cost of each bat and ball ?

   Solution: Let the cost of each bat and ball be Rs x and y respectively.

   ➙ Cost of 7 bats = Rs 7x

   ➙ Cost of 6 balls = Rs 6y

   \implies{\rm }⟹ 7x + 6y = 13200

   Equation 1

   Now , In second case

   ➙ Cost of 3 bats = Rs 3x

   ➙ Cost of 5 balls = Rs 5y

   \implies{\rm }⟹ 3x + 5y = 5900

   Equation 2

   [ Multiplying 5 in equation 1 and 6 in equation 2 ]

   ➯ (7x + 6y) 5 = 13200 × 5

   35x + 30y = 66000ㅤㅤㅤeqⁿ i

   ➯ (3x + 5y) 6 = 5900 × 6

   18x + 30y = 35400ㅤㅤeqⁿ ii

   ㅤㅤㅤㅤㅤ35x + 30y = 66000

   ㅤㅤㅤㅤㅤ18x + 30y = 35400

   ㅤㅤㅤㅤㅤ–ㅤㅤ–ㅤㅤ–

   ㅤㅤㅤㅤ━━━━━━━━━━━━━━━

   ㅤㅤㅤㅤㅤ17x = 30600

   ∴ x = 30600/17 = 1800

   Now putting the value of x in equation 1.

   \implies{\rm }⟹ 7 × 1800 + 6y = 13200

   \implies{\rm }⟹ 6y = 13200 – 12600

   \implies{\rm }⟹ y = 600/6

   \implies{\rm }⟹ y = 100

   Hence, the cost of each bat and ball is Rs 1800 & Rs 100 respectively.

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