3 x 5 x 5 = 75
There's only one single number that equals 75. That number is 75, and it's not a prime number. If you mean which prime numbers multiplied together equal 75, 52 X 3 works.
75 multiplied by 400 equals 30,000. This calculation can be performed by simply multiplying the two numbers together.
There are many pairs of numbers that can multiply to equal 75. For example, 5 times 15 equals 75, as does 3 times 25. Additionally, 1 times 75 is another pair that achieves the same product.
All composite numbers can.
1/4 of all numbers are factored by 4 and 1/6 of all numbers are factored by 6
150
There's only one single number that equals 75. That number is 75, and it's not a prime number. If you mean which prime numbers multiplied together equal 75, 52 X 3 works.
x2 + 1 can't be factored in the real numbers. If complex numbers are acceptable, it can be factored as (x + i)(x - i).
75 multiplied by 400 equals 30,000. This calculation can be performed by simply multiplying the two numbers together.
All composite numbers can.
composite
1/4 of all numbers are factored by 4 and 1/6 of all numbers are factored by 6
45 factored into prime numbers is: 5 x 9 5 x 3 x 3
-70
r2-r-56 factored out equals (r-8)(r+7).
The answer is 450. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
It cannot be factored.