What is the root of x2 x 1?
1.618 & -0.618 are the roots of quadratic equation x2 – x – 1 = 0.
How do you Factorise?
A factorised answer will always contain a set of brackets. To factorise an expression fully, take out the highest common factor (HCF) of all the terms. For example, is the HCF of 4 x 2 and as 2 is the biggest number that will divide into 4 and 6 and is the biggest variable that will divide into and .
What is the value of x2 2x 1?
Answer: answer is 0. Step-by-step explanation: its as simple as that just substitute 1 in the places of (x) it’s very easy..
What is the solution of x2 2x 1 0?
Answer: The positive solution to the equation –x2 + 2x + 1 = 0 is x = 1 + √2.
What are the roots of x2 1 0?
X2-1 =0. (X+1)(x-1) then it’s roots are -1 and 1.
What are the factors of x2 5x 6?
Given equation Thus, x+3 and x+2 are the factors of the polynomial x2 + 5x + 6.
What is the factor of x2 12x 35?
Factors: (1,35),(5,7) are our only factors. We know that 5 and 7 multiply to 35 and add to 12.
How do you Factorise quickly?
The way to factorise is to find two numbers that multiply together to make 18 but add to make -9. Eighteen doesn’t have all that many factor pairs – (1, 18), (2, 9), (3,6) and their negative counterparts. The one we’re after is (-3, -6), which just drop into brackets with the s to make ( x − 3 ) ( x − 6 ) .
What is the formula for factor 1 x 2?
Rewrite 1 1 as 12 1 2. Since both terms are perfect squares, factor using the difference of squares formula, a2 −b2 = (a+b)(a−b) a 2 – b 2 = ( a + b) ( a – b) where a = 1 a = 1 and b = x b = x.
Which is the best way to factor X?
Wolfram|Alpha gives me − 1 4 ( 1 + 5 − 2 x) ( − 1 + 5 + 2 x). Cymath gives me ( x − 1 + 5 2) ( x − 1 − 5 2). The closest I can get is ( x + 1) ( x − 1) − x. So how do I get a nice answer like the ones listed above?
Which is the quadratic formula for factoring X?
So f ( x) = ( x − a) ( x − b) where a, b are the roots of f (given by the quadratic formula). This gives Cymath’s answer. If you clear the denominators in Cymath’s answer, you get Wolfram’s answer. which is a difference of squares, so it factors as ( x − 1 / 2 − 5 / 2) ( x − 1 / 2 + 5 / 2).
Which is the correct equation for x 2 x 1?
This equation is in standard form: a x 2 + b x + c = 0. Substitute 1 for a, − 1 for b, and − 1 for c in the quadratic formula, 2 a − b ± b 2 − 4 a c . Multiply -4 times -1. Multiply − 4 times − 1. Add 1 to 4. Add 1 to 4. The opposite of -1 is 1. The opposite of − 1 is 1. Now solve the equation x=\\frac {1±\\sqrt {5}} {2} when ± is plus.