Answer:
x5-2x3+2x2-8x+4
Step-by-step explanation:
multiplying them we get
x5-4x3+2x2+2x3-8x+4
= x5-2x3+2x2-8x+4
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Answer:
2x + 3
Step-by-step explanation:
Let's call the number x
twice a number is 2 times the number, or in this case 2x
3 more than 2x is 2x + 3
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-Chetan K
This should be recognized as the difference of perfect squares which is of the form:
(a^2-b^2) and the difference of squares always factors to:
(a-b)(a+b) in this case:
(3x-8)(3x+8)
Answer:
T12=a-99=106
Step-by-step explanation:
that's the answer
Answer: She had 200 cards to start with
Step-by-step explanation:
Let x = the amount of cards she had initially. This means she had x cards to start with.
She gave half of the cards she had to a friend. This means she gave her friend x/2 cards. She is left with with (x-x/2) = x/2 cards.
She also gave 1/4 of the remaining cards to her brother. This means that she gave (1/4 × x/2) = x/8 cards to her brother.
Remaining number of cards will be x/2 - x/8 = (4x-x)/8 = 3x/8
She still has 75 cards left. This means
3x/8 = 75
Cross multiplying with 8, it becomes
3x = 75×8 = 600
x = 600/3 = 200
She had 200 cards to start with.
