0
The general expression for a quadratic polynomial is: ax2 + bx + c
Comparing x2 - 4x - 45 with general expression we get
a = 1, b = -4 and c = -45
Multiplying a and c: ac = -45
Now break down b in two numbers in such a way that sum of the numbers is -4 and product is equal to -45, product of a and c.
The two numbers are -9 and 5. Since sum of -9 and 5 is -4 and the product is -45.
So in place of -4x we can write -9x + 5x.
The expression now becomes: x2 - 9x + 5x - 45
x(x - 9) + 5(x - 9)
(x + 5)(x - 9)
So factors are (x + 5) and (x - 9).
Note: The middle term is split into two terms so that there are in total four terms in the expression and the product of extreme terms is equal to product of middle terms.
Wiki User
∙ 9y ago
Wiki User
∙ 8y ago(x - 9)(x + 5)
Add your answer:
Earn +20 pts
How do you factor x cubed minus x squared plus x?
Factor out the GCF and get X(X2-X+1).
What does reduce by a factor x means?
It means to divide by x. For example, if I were to reduce 4 by a factor of x, I would get 4/x.If I reduced x by a factor of x, I would get x/x, which is equal to 1.
(x-6)(x plus 1) expand and simplify?
whats (x-6)(x+1) simplified
Factor x2 9X 18?
Asuming you ment The Factor of x^2+9x+18 the answer is (x+3)(x+6) Asuming you ment The Factor of x^2+9x+18 the answer is (x+3)(x+6)
Factor 9 - x2?
9 - x2 will factor into (3 - x)(3 + x)
Whats the answer to Factor x3-3x2 plus x-3?
x3 - 3x2 + x - 3 = (x - 3)(x2 + 1)
Whats x divided by 5 equals 3 whats x?
x/5 = 3 Multiply both sides by '5' x = 15
How do you spell x factor?
X Factor.
Whats the least common factor of 13 and 14?
1
Where is x factor?
the x factor is now in london
What is factor theorem?
x-a is a factor of the polynomial p(x),if p(a)=0.also,if x-a is a factor of p(x), p(a)=0.
Is kate good from x factor?
kate is not on the x factor
Was Lady Gaga on x factor?
i say she was on the x factor
What is the factor of 10a4?
2 x 5 x a x a x a x a = 10a^4
Whats a good resort name?
instead of typing "Whats a" type in "what is a" because my answer is on there x
What are the factor pairs of 950?
The following are the factor pairs of 950 factor pair = 950,1 factor pair = 475,2 factor pair = 190,5 factor pair = 95,10 factor pair = 50,19 factor pair = 38,25
What is the greatest common factor of 10 30 35?
whats is the greatest common factor of 10, 30, and 35
