Y=-x^2+10x+24 for -1≤ x ≤ 3 (i) please show step by step of subdiving the interval [-1,3] into four equal parts

(ii) please show step by step of constructing upper and lower rectangles for each subinterval

(iii) summing the areas of the upper and lower rectangles

and (b)

PLEASE HELPP

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?