# help!

posted by .

factor
a - 10a + 21

• help! -

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)

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### algebra 1

Can someone solve theses for me? Factor the polynomial x2 + 7x + 12 completely Factor the polynomial x2 – 4 completely Factor the polynomial 18a2b – 4ab + 10a completely x2 + 7x + 12 = (x+4)(x+3) x2 – 4 = (x+2)(x-2) 18a2b –
2. ### math

factor the expression: 10a^2-19a+7 ok I no how to start of which would be (10a- )(a+ ) but i don't no how to factor it from here
3. ### Algebra

Factor. 3a^2 - 10a + 8 Thank you! :-)
4. ### math

Simplify and show: 2a-6(10a)-5a^2(2) ----------------- (2a-6)^2 This is my work but its not right. 10a-10a^2 -------- 2a-6 Then solve for a by setting numerator to zero. so I got this... 10a-10a^2=0 10a(1-a)=0 a=0, a=1 My book says …
5. ### algebra

plz solve factor trinomial a^2+10a+16
6. ### Geometry

Solve 10a - 5b = 25 for b. f) b = 10a + 25 g) b = 10a - 25 h) b = 2a +5 i) b = 2a - 5 What exactly are they asking me to do here?
7. ### Geometry

Solve 10a - 5b = 25 for b. f) b = 10a + 25 g) b = 10a - 25 h) b = 2a +5 i) b = 2a - 5 What exactly are they asking me to do here?
8. ### Algebra

factor a^2+10a+24 t^2+4t-45
9. ### MATH PLEASE HELP!!!

1.Factor 3/4 out of 3/4z+6. 2.Factor 18x+6y using the GCF. 3.Factor −5 out of −10a−25.
10. ### MS.SUE PLEASE HELP!!!

1.Factor 3/4 out of 3/4z+6. 2.Factor 18x+6y using the GCF. 3.Factor −5 out of −10a−25

More Similar Questions