First you have to do the ones in the brackets
The equation given in the question is
5x^2 - 5x - 100 = 5x^2 - 25x + 20x - 100
= 5x(x - 5) + 20(x - 5)
= (5x + 20)(x - 5)
From the above deduction, it can be easily concluded that the correct option among all the options that are given in the question is the third option or option "C". I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
Answer:
12
Step-by-step explanation:
1,2,3,4,6 and 12 all go into the number 12
Answer:
c
Step-by-step explanation:
Given the roots are x = - 1 + 4i and x = - 1 - 4i then the factors are
(x - (- 1 + 4i))(x - (- 1 - 4i))
= (x + 1- 4i )(x + 1 + 4i )
= (x + 1)² - 16i² → [ i² = - 1 ]
Expand and simplify
= x² + 2x + 1 + 16
Hence
x² + 2x + 17 = 0 → c
Its the last one! Also if you dont know what I mean by this is, its the 4th one. You Welcome Merry Christmas