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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.
What else can I help you with?
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.
What is the factor of a2 plus 9a plus 20?
a2+9a+20 = (a+4)(a+5) when factored
How do you factorise 3a2 plus 9a?
It is 3a(a+3) when factored
What does 9a squared equal?
9a squared = 81a^2
What is 3a sqared plus 9?
3a squared plus nine = 19a. 3a to the second power = 9a plus 9 = 19a.
4a squared minus 9a plus 5?
4a2 - 9a + 5 = 4a2 - 4a -5a + 5 = 4a(a - 1) - 5(a - 1) = (4a - 5)(a - 1)
What is 12a plus 6b plus 9a plus 14b equals?
12a + 6b + 9a + 14b =(12a + 9a) + (6b + 14b) =21a + 20b
2a plus 5a plus 9a equals?
2a+5a+9a = 16a
How do you factor 81a2 plus 36a plus 4?
(9a + 2)(9a + 2)
What is 3a plus 4b plus 6a plus 3b in algebra?
9a + 7b *remember to look and understand the letters!*
What is 9a plus 21 equals?
9a+21 3(3a+7)
-9(a plus b)?
The simplified expression is -9a -9b.
What is the answer to 9a plus 5?
There is nothing you can do to 9a + 5 without knowing the value of a.
