Take out the GCF of -4d, which creates
-4d(d^2+7d-1)
Doesn't seem right... tell me if I messed up anybody... if not, there's your answer.
Answer:
26
Step-by-step explanation:
-4*2+3*4-2
16+3*4-2
16+12-2
28-2
26. PEMDAS
Step-by-step explanation:
26×12 = 312
partial products are "strange". but ok, since your teacher wants it that way :
multiply the tens with the tens : 20×10 = 200
multiply the tens with the ones : 20×2 = 40
multiply the ones with the tens : 6×10 = 60
multiply the ones with the ones : 6×2 = 12
--------
312
so, 12 and 40 are correct from the original list, 600 and 2000 are wrong.
how do you do it conceptually ?
26×12 start with the left digit (1),
multiply the left number right to left
6×1 (no carry) 6
2×1 2
26
next digit to the right (2),
also move the result one position
6×2 (carry 1) 2
2×2 (plus carry) 5
52
now we add position related
26
52
---------
2
1 (and carry 1)
3 (2 plus carry)
312
Answer:
√mn = m^1/2 * n^1/2
Explanation:
1- square root means that the number is raised to the power 1/2.
Therefore:
√mn = (mn)^1/2
2- When we have a bracket containing two numbers multiplied by each other, and the whole bracket is raised to a certain power, then each number within the bracket would be raised to this same power.
This means that:
(mn)^1/2 = m^1/2 * n^1/2
Hope this helps :)
3 consecutive even integers....x, x + 2, x + 4
x + x + 4 = 3(x + 2) - 22
2x + 4 = 3x + 6 - 22
2x + 4 = 3x - 16
16 + 4 = 3x - 2x
20 = x
x + 2 = 20 + 2 = 22
x + 4 = 20 + 4 = 24
ur 3 integers are : 20,22,24
