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Solve the following quadratic equations:

Question 1: $21e^2 + 15e=0$	Question 2: $2k^2 +5k - 3=0$
Question 3: $5t^2 - 7t + 2=0$	Question 4: $3a^2 - 10a + 7=0$
Question 5: $64j^2 - 1=0$	Question 6: $7v^2 + 10v + 3=0$
Question 7: $3w^2 -5w - 2=0$	Question 8: $11m^2 + 18m + 7=0$
Question 9: $5n^2 -9n - 2=0$	Question 10: $7f^2 +48f - 7=0$
Question 11: $7q^2 - 36q + 5=0$	Question 12: $49p^2 - 36=0$
Question 13: $12u^2 - 18u=0$	Question 14: $2d^2 - 7d + 3=0$
Question 15: $10r^2 - 22r=0$	Question 16: $2g^2 + 13g + 11=0$
Question 17: $11s^2 +54s - 5=0$	Question 18: $11z^2 +120z - 11=0$
Question 19: $100y^2 - 4=0$	Question 20: $81c^2 - 9=0$
Question 21: $11b^2 - 122b + 11=0$	Question 22: $44h^2 + 8h=0$

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Question 1: $3e(7e+5)=0$ $\implies e=0 , e=-{\Large\frac{5}{7}}$	Question 2: $(k+3)(2k-1)=0$ $\implies k=-3 , k={\Large\frac{1}{2}}$
Question 3: $(5t-2)(t-1)=0$ $\implies t={\Large\frac{2}{5}} , t=1$	Question 4: $(a-1)(3a-7)=0$ $\implies a=1 , a={\Large\frac{7}{3}}$
Question 5: $(8j+1)(8j-1)=0$ $\implies j=-{\Large\frac{1}{8}} , j={\Large\frac{1}{8}}$	Question 6: $(7v+3)(v+1)=0$ $\implies v=-{\Large\frac{3}{7}} , v=-1$
Question 7: $(w-2)(3w+1)=0$ $\implies w=2 , w=-{\Large\frac{1}{3}}$	Question 8: $(m+1)(11m+7)=0$ $\implies m=-1 , m=-{\Large\frac{7}{11}}$
Question 9: $(5n+1)(n-2)=0$ $\implies n=-{\Large\frac{1}{5}} , n=2$	Question 10: $(7f-1)(f+7)=0$ $\implies f={\Large\frac{1}{7}} , f=-7$
Question 11: $(7q-1)(q-5)=0$ $\implies q={\Large\frac{1}{7}} , q=5$	Question 12: $(7p+6)(7p-6)=0$ $\implies p=-{\Large\frac{6}{7}} , p={\Large\frac{6}{7}}$
Question 13: $6u(2u-3)=0$ $\implies u=0 , u={\Large\frac{3}{2}}$	Question 14: $(d-3)(2d-1)=0$ $\implies d=3 , d={\Large\frac{1}{2}}$
Question 15: $2r(5r-11)=0$ $\implies r=0 , r={\Large\frac{11}{5}}$	Question 16: $(g+1)(2g+11)=0$ $\implies g=-1 , g=-{\Large\frac{11}{2}}$
Question 17: $(11s-1)(s+5)=0$ $\implies s={\Large\frac{1}{11}} , s=-5$	Question 18: $(z+11)(11z-1)=0$ $\implies z=-11 , z={\Large\frac{1}{11}}$
Question 19: $(10y+2)(10y-2)=0$ $\implies y=-{\Large\frac{1}{5}} , y={\Large\frac{1}{5}}$	Question 20: $(9c+3)(9c-3)=0$ $\implies c=-{\Large\frac{1}{3}} , c={\Large\frac{1}{3}}$
Question 21: $(b-11)(11b-1)=0$ $\implies b=11 , b={\Large\frac{1}{11}}$	Question 22: $4h(11h+2)=0$ $\implies h=0 , h=-{\Large\frac{2}{11}}$