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

first expand the brackets (3x-2)(x+1) to get 3x²-2x+3x-2, then we can simplify this to get 3x²+x-2.Then multiply this by x to get the final answer: 3x³+x²-2x.

Answered by Natalia A. • Maths tutor

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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 ...

Answered by Léa P. • Maths tutor

5048 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...

Answered by Celine A. • Biology tutor

3781 Views

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

(-7/2,-31/4)

Answered by Vishvan N. • Maths tutor

3283 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. Howeve...

Answered by Adam C. • Chemistry tutor

16953 Views