Solve each equation with the quadratic formula
21. 4v²+7v-7=0
22. -8b²-3b+22=0
23. 5x²+4x-15=0
24. 9x²-12x+12=0
25. 11r²+7r=3
26. r²=-8r+65
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21. 4v²+7v-7=0
22. -8b²-3b+22=0
23. 5x²+4x-15=0
24. 9x²-12x+12=0
25. 11r²+7r=3
26. r²=-8r+65
Help Please
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Answer:
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Step-by-step explanation:
21. v= −7±√161/8
22. b= −3±√713/16
23. x= −2±√79/5
24. x= 2±2i√2/3
25. r= −7±√181/22
26. r= 5,−13