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Ugo [173]
3 years ago
6

Simplify: -10+3r+2r squared-r

Mathematics
1 answer:
VMariaS [17]3 years ago
4 0

Step-by-step explanation:

using

The quadratic general formula

which is

r= -b±√(b²-4ac)

---------------

2a

b= coefficient of r=3

a = coefficient of r²=2

c= constant or number without any variable=-10

r= -3±√(3²-(4×2×-10)

-----------------------

2×2

r=-3±√(9-(-80)

----------------

4

r= -3±√(9+80)

------------

4

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