Answer: x+4
Step-by-step explanation:
(x-9)(x+4)= x^2-5x-36
Answer:
It is a trapezium, I guess
Step-by-step explanation:
To know more see the picture attached
Answer:
65
Step-by-step explanation:
(4-7i)(4+7i) =16 + 28i-28i -49i^2 ➡16 - 49i^2
16 + 49 = 65
the fault here is i^2= -1 and -1 multiplied by -49 is +49 not -49
40 X 7/16?
I dont competly under stand becouse you just multaply it and the anser is 17.5