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To solve x2-x+5=0
a=1 b=-1 c=5
Discriminant Δ= b2-4ac
= (-1)2-4*1*5
= 1- 20
= -19< 0
Roots are complex.
Using the formula to solve the equation
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2. |
To solve x2+4x+5=0
a=1, b=4, c=5
Discriminant Δ=b2-4ac
=(4)2-4*1*5
=16-20
=-4<0
Roots are complex.
Using the formula to solve the equation
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x = -2 ± i
Roots are x=-2+i, -2-i |
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3. |
To solve 2x2-2x++5 = 0
a=2 b=-2 c=5
Discriminant Δ= b2-4ac
= (-2)2-4*2*5
= 4-40
= -36 < 0
The roots are complex.
Using the formula to solve the equations
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4. |
To solve 9x2+12x = -29
Transposing 9x2+12x+2a = 0
a=9, b=12, c=29
Discriminant Δ= b2-4ac
= (12)2-4*9*29
= 144-1044
= -900< 0
Roots are complex. Using the formula to solve the equations
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5. |
To solve 49x2-70x = -34
Transposing 49x2-70x+34 = 0
a=49, b=-70, c=34
Discriminant Δ= b2-4ac
= (-70)2-4*49*34
= 4900-6664
= -1764< 0
Roots are complex. Using the formula to solve the equations
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6. |
To solve x2-22x+122 = 0
a=1, b=22, c=122
Discriminant Δ= b2-4ac
= (22)2-4*1*122
= 484-488
= -4< 0
Roots are complex. Using the formula to solve the equations
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7. |
To solve x2+x = -1
Trasposing x2+x+1 = 0
a=1, b=1, c=1
Discriminant Δ= b2-4ac
= (1)2-4*1*1
= 1-4
= -3< 0
Roots are complex. Using the formula to solve the equation
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8. |
To solve 3x2+7x+20 = 0
a=3, b=7, c= 20
Discriminant Δ= b2- 4ac
= (7)2- 4 * 3 * 20
= 49-240
= -191< 0
Roots are complex. Using the formula to solve the equations
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