0
Are you sure it's minus 49?
If so, then:
9a2 +42a -49
={(3a)2 + 2·3a·7 + 72} -2·72
=(3a -7)2 - (7·sqrt(2))2 (2nd binomial formula)
={(3a -7) + (7·sqrt(2))} · {(3a -7) - (7·sqrt(2))} (3rd binomial formula)
=(3a +2,89949) · (3a -16,89949).
Otherwise if it's plus 49 then simpler:
9a2 +42a +49
={(3a)2 + 2·3a·7 + 72}
=(3a -7)2.
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Ezra
SteveAdd your answer:
Earn +20 pts
What is the GCF of 9a to 10a3?
The GCF is a.
Factor this expression 9a4 - b2?
9a4-b2=36a-2b=2(18-b) But if you meant 9a^4-b^2 it is not possible to factor
Why does the number of viruses sometimes increase and sometimes decrease?
it sometimes decreases because as the virus infects a beacterial cell its dormant as it infects it. it then spreads to other cells adn becomes active again. 9A. do you own work
What are all the factors of the monomial 6ab to the 2nd power?
They are 1, 2, 3, 4, 6, 9, 12, 18, 36,1a, 2a, 3a, 4a, 6a, 9a, 12a, 18a, 36a,1b, 2b, 3b, 4b, 6b, 9b, 12b, 18b, 36b,1a2, 2a2, 3a2, 4a2, 6a2, 9a2, 12a2, 18a2, 36a2,1ab, 2ab, 3ab, 4ab, 6ab, 9ab, 12ab, 18ab, 36ab,1b2, 2b2, 3b2, 4b2, 6b2, 9b2, 12b2, 18b2, 36b2.
Pre-algebra with pizzazz 188 answer?
The Rookie Football Player Who Kept Asking His Coach To Flood The Football field With Water So He Could Go In As A Sub.
