## 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.