A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping?
x(x2 + 4) + 5(x2 + 4)
x2(x + 4) + 5(x + 4)
x2(x + 5) + 4(x + 5)
x(x2 + 5) + 4x(x2 + 5)
Solution:
It is given that
x3 + 4x2 + 5x + 20
Here we should find the factors by grouping
It is done by taking out the greatest common factor which is common from different terms.
We can take x2 common from the first two terms and 5 common from the last two terms
x3 + 4x2 + 5x + 20
= x2 (x + 4) + 5 (x + 4)
= (x2 + 5) (x + 4)
Therefore, the factors are x2(x + 4) + 5(x + 4).
Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping?
x(x2 + 4) + 5(x2 + 4)
x2(x + 4) + 5(x + 4)
x2(x + 5) + 4(x + 5)
x(x2 + 5) + 4x(x2 + 5)
Summary:
x2(x + 4) + 5(x + 4)is a way to determine the factors of x3 + 4x2 + 5x + 20 by grouping.
Math worksheets and
visual curriculum
visual curriculum