Solving Quadratics

n²+4n-21=0

• {3,-5}

• {3,-7}

• {-6,-2}

• {-3}

x²+x=0

• {-1,0}

• {-1,-3}

• {-4,2}

• {1,0}

r²-9=0

• {2,-1}

• {-3,3}

• {6,0}

• {-3,-5}

16b²-1=0

• (4b-1)²

• (8b+1)(8b-1)

• (4b+1)(4b-1)

• (3b+4)(3b-4)

3n²+10n+3=0

• {14/5, 2}

• {7,-4}

• {-1,3}

• {-1/3, 3}

9b²-12b+4=0

• (3b+2)(3b-2)

• (3b-2)²

• (5b+3)(5b-3)

• (9b+4)²

n²+4n=0

• {4,-5}

• {-4,0}

• {4,6}

• {8,0}

r²+r=0

• {-1,7}

• {-1,0}

• {-4,0}

• {1,0}

6a²+5a-25=0

• {8/3, -9/2}

• {-11/13, -11/12}

• {5,-3}

• {5/3, 5/2}

b²-36=0

• {2,-14}

• {14,-2}

• {6,-6}

• {6,6}