factor

a - 10a + 21

1 answer

I think that you didn't write the question well , because it would me much more logically that your homework goes like this a^2 - 10a + 21
then this is :
a^2 - 7a-3a + 21
a (a-7) – 3 (a-7)
(a-3)(a-7)

a - 10a + 21 - like this is : -9a + 21 = -3(3a-7)

Similar Questions

The factor "number of stars in the survey" should preferably be referred to as a / an A) Astronomical factor B) Biological
1. 0 answers
I am to factor this completely and I am stuck.2r^3 + 8r^2 +6r Note: x^2 is x-squared (that is, x with the superscript 2), etc. 2
1. 0 answers
If the sides of a box all double in length, by how much does its volume increase?By a factor of 2 By a factor of 4 By a factor
1. 2 answers
Factor by identifying a common factor in each term.g) 6xy2 = (3x) (?) h) 25a3b2 = (5a2b2) (?) i) 6x + 6y + 6p Factor: j) x(x+2)
1. 1 answer