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expand and simplify x(3x-2)(x+1)

first expand the brackets (3x-2)(x+1) to get 3x 2 -2x+3x-2, then we can simplify this to get 3x 2 +x-2.Then multiply this by x to get the final answer: 3x 3 +x 2 -2x.
NA
Answered by Natalia A. • Maths tutor
10013 Views

Bananas cost 30p each. Oranges cost 45p each. Write an expression, in pence, for the cost of x bananas and y oranges..

Each banana cost 30p so the total price for bananas will be "number of bananas x 30". Here, bananas are called by the variable x so this number can be written as "30x" and will change dep...
LP
Answered by Léa P. • Maths tutor
5662 Views

Describe the life cycle of a virus.

Attachment. A virus, for example a bacteriophage attaches to the surface receptor of the host bacterial cell.Penetration. The virus injects the viral DNA genome through the cell wall and the cell membrane an...
CA
Answered by Celine A. • Biology tutor
4192 Views

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

(-7/2,-31/4)
VN
Answered by Vishvan N. • Maths tutor
3687 Views

What is the C-O-H bond angle in propan-2-ol and why is this? [4 marks]

The bond angle is 104.5 degrees. This is because of the pairs of electrons around the oxygen atom: it has 2 bonded pairs and 2 lone pairs. Lone pairs and bonded pairs of electrons repel each other. However a...
AC
Answered by Adam C. • Chemistry tutor
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