Answer:
60x + 18
Step-by-step explanation:
8x - 4 [2x - 5 ( 3x + 1 )] - 2 [x - (x - 1)]
distribute
8x - 4 [2x - 15x - 5] - 2 [x - x + 1]
combine like-terms
8x - 4 [- 13x - 5] - 2 [1]
distribute again
8x + 52x + 20 - 2
combine like-terms again
60x +18
Answer: A is 8. B is the square root of 128.
Step-by-step explanation: Nah.
7 Oxen= $280
2,150 Ibs of food= $430
15 clothes= $150
430+280+150=860
Tax- 860 x 1.09= $937.4
Answer: Upper left corner
Explanation:
The error happens in step 2. Notice that x is <u>not</u> part of the second term 16, so there's no way to factor x from it unless you want a fraction to result.
The second step should be 8(4x-2)
Another way to factor is to say 16(2x-1)
Answer:
f = -5
Step-by-step explanation:
If 2x – 1 is a factor of 16x4 + 24x3 + 2x + f, find f.
If 2x - 1 = 16x⁴ + 24x³ + 2x + f, find f.
2x - 1 = 0
2x = 1
x = 1/2
Hence
f(1/2) = 16(1/2)⁴ + 24(1/2)³ + 2(1/2) + f
= 16(1/16) + 24(1/8) + 1 + f
= 1 + 3 + 1 + f
= 5+ f
f = -5
