Find roots of the equation, x2 +12x-20=0
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x²+12x-20=0
using quadratic formula
a=1,b=12 and c= -20
D=b²-4ac
putting the values
(12)²-4(1)(-20)
144+80= 224
so, x= -b±√D/2a
-(12)±√224/2×1
-12±4√14/2
Taking 4 common
-12±4(-3+√14)/2
12±2(-3+√14)
12± -6+2√14
6±2√14
Plus,6+2√14
Minus, 6-2√14
I HOPE THIS WILL HELP YOU MARK ME YOU
using quadratic formula
a=1,b=12 and c= -20
D=b²-4ac
putting the values
(12)²-4(1)(-20)
144+80= 224
so, x= -b±√D/2a
-(12)±√224/2×1
-12±4√14/2
Taking 4 common
-12±4(-3+√14)/2
12±2(-3+√14)
12± -6+2√14
6±2√14
Plus,6+2√14
Minus, 6-2√14
I HOPE THIS WILL HELP YOU MARK ME YOU
Vinayak333:
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