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Factorise x^2+6x+5=0 by completing the square.

When completing the square, we first divide the whole equation by the x^2 component. In this case, the x^2 component is 1 so nothing changes. We now apply the method to convert to square form: we reduce t...

JI
Answered by Jonny I. Maths tutor
8607 Views

Find the coordinates where the curve y=x^2+6x+5 crosses the x-axis.

When any curve crosses the x-axis, the y-coordinate is 0 at that point. Hence, our answers will have y=0. So we want to solve x^2+6x+5=0. From before, we have that x^2+6x+5=0 can be rewritten as (x+5)(x+1...

JI
Answered by Jonny I. Maths tutor
4069 Views

Factorise fully x^2+6x+5=0

To start, notice that we have x^2 in our equation. This means that our answer is of the form (x )(x ). We now look for integers that give 5 when multiplied together. The only way we can do this is with th...

JI
Answered by Jonny I. Maths tutor
4741 Views

What is functional RNA?

Non-coding RNA.The sequence of Messenger RNA codes for a protein so is not functional RNA. However some RNA has catalytic function, such as ribosomal RNA, doesn't code for proteins so is functional RNA. T...

EC
Answered by Edward C. Biology tutor
12212 Views

Outline the first three levels of protein structure, including the types of bonding within each

The primary structure of a protein is its amino acid sequence which is determined by the base sequence of the gene which codes for the protein. Secondary structures include alpha-helicies and beta-pleated...

RG
Answered by Rowena G. Biology tutor
2087 Views

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