how to solve 8.2xsquared-3.7xsquared=72

Question

How to solve

Answer 1

me assume that stuf shood be . . . 8.2x^2 -3.7x -72=0 . . . quadratik equashun giv x=3.1973749 or -2.7461553 . . . ######### if yu reelee want 8.2x^2 -3.7x^2, thats 4.5x^2=72 . . . or x^2=16 . . . x=+-4

Answer 2

" Solution:Given 8.2x²-3.7x²=72

4.5x²=72
x²=72/4.5
x=√16
x= ±4
hence x=-4
and x=4
Variance is Standard Deviation Squared
Variation (dispersion) is the property of deviation of values from the average. The degree of variation is indicated by the measures of variation. There are various measures of variation and the commonly used ones are:
Range
Mean deviation
Standard Deviation
Quartile deviation.
"