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Find the Maximum Point of this curve - -X^2 -7X -20

(-7/2,-31/4)
VN
Answered by Vishvan N. • Maths tutor
3818 Views

How to complete the square to find the value of x?

To complete the square you compare your equation in the form x 2 + bx + c = 0 to a similar equation of (x + b/2) 2 + c = 0 . From expanding out the second equation we have x 2 + bx + (b/2) 2 + c = 0 we can s...
AA
Answered by Ayotunde A. • Maths tutor
4151 Views

Factorise x^2 -7x+10, and hence solve x^2-7x+10=0

Firstly, it is important to recognise that the answer will need to be in the form of two pairs of brackets because the question is asking us to factorise a quadratic equation. The equation only has a single ...
GT
Answered by Gareth T. • Maths tutor
6816 Views

How do you know if a noun is feminine and needs la' before it or if a noun is masculine and needs 'le'?

This is one of those questions that doesn't have a straightforward answer and it is only through experience of the language that one learns the gender of each noun. However, there are some noun endings that ...
NG
Answered by Natasha G. • French tutor
2505 Views

Solve x^2 = 4(x-3)^2

First expand the bracket (x-3) 2 separately to give x 2 - 6x +9 Next multiply by the 4 outside the brackets to give 4x 2 -24x +36 Now all the terms have been expanded you can collect the like terms in the eq...
JV
Answered by Joe V. • Maths tutor
4378 Views