Need help with some questions:

1) Expand and simplify:

a)

b)

2) Simplify fully, expressing each answer with a rational denominator:

i.

ii.

3) Solve simultaneously for x and y given the equations:

4) The sum of 2 numbers is 23 and the product is 112.

i. Write down a pair of simultaneous equations to represent the information.

ii. Find the two numbers

Step-by-step explanation:

did question 4 for you :)

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically