Quiz Math level 5eme : the literal calculation

This calculation once developed gives : k x (a b)

K x a k x b

K x a - k x b

This calculation is impossible

What is the definition of develop?

To develop is to reduce a product into a difference

To develop is to transform a product into a sum (difference)

To develop is to add a product and a sum (difference)

What is the opposite of develop called?

There is none

Reduce

Factorize

Factorize this expression: z x a z x b

Z x a b

Z x a (z x b)

Z x (a b)

What is the definition of factoring?

Factoring is reducing a sum (or a difference) into a product

Factoring is transforming a sum (or a difference) into a product

Factoring is transforming a product into a difference

Can we simplify by removing the x sign?

It depends on the calculations

Yes, always

Never

Simplify 3 x y and 12 x y

3 - y and 12 - y

3 y and 12 y

You can't

Simplify a x a and a x a x a

You can't

A² or a to the square and a3 to the cube

Aa and aaa

Calculate this literal expression: 5 z x ( z 4 ) for z = 2

5 z x (z 4 ) = 5 x 2 x ( 2 4 ) on line : 10 x 6 on line : 60

5 x (z 4 ) = 5 x 2 x ( 2 z ) on line : z x 2 on line : 4

This is totally impossible

0 x a does it simplify?

It does not simplify

0 a

A 0