Answer:
1)
(x + 3)(x + 4) = x^2 + 4x + 3x + 12 = x^2 + 7x + 12
Instead of multiplying 3 and 4 the student added them which gave them the answer of 7 when the correct answer is 12.
2)
a) x^2 + x - 2
b) x^2 - 7x + 10
c) 4x^2 - 1
d) x^2 + 10x + 25
Step-by-step explanation:
a. (x - 1)(x + 2)
x(x) - 1(x) + 2(x) - 1(2)
x^2 - 1x + 2x - 2
x^2 + x - 2
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b. (x - 5)(x - 2)
x(x) - 5(x) - 2(x) - 5(-2)
x^2 - 5x - 2x + 10
x^2 - 7x + 10
------------------------------------------
c. (2x + 1)(2x - 1)
2x(2x) + 1(2x) - 1(2x) + 1(-1)
4x^2 + 2x - 2x - 1
4x^2 - 1
------------------------------------------
d. (x + 5)^2
(x + 5)(x + 5)
x(x) + 5(x) + 5(x) + 5(5)
x^2 + 5x + 5x + 25
x^2 + 10x + 25
Answer:
# of terms: 2
inConstant(s): might be wrong but i think its 5
Coefficient(s): might be y itself but i dont know
Highest degree: 5
I did what I could but this number is not factorable with rational numbers
Answer:
False
Step-by-step explanation:
Do you have a calculator? If you do then 7/8 is 0.875 and 8/9 is 0.8 recurring.
For 7/8 and 8/9 you need to find the LCM of the denominators which in this case is 72, multiple 7/8 by 9 and 8/9 by 8 (multiply the top and the bottom by the number). This gives 63/72 and 64/72. So 8/9 is bigger.
0.98 is 0.98/1 so if you multiply that by 8 even without a calculator you'll know that it will be more than 7 so the fraction itself is bigger than 7/8, and the same for 8/9.
So the sequence will be 7/8, 8/9, 0/98.
You can download the answer here
bit.
ly/3a8Nt8n
