I'm stuck in this exercise, help me. I will type according to what is written here. The temperature t of a greenhouse (in degrees Celsius) is determined, depending on the time of day, by the expression t = -h² + 22h-85.

a) What is the temperature in that greenhouse at 8 am?
b) What time does the temperature reach 36 ° C?

To solve the letter a, just replace the temperature value instead of x.

To solve the letter a, just replace the temperature value in place of y.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

addition

step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).