For further practice, you can find full variants and video solutions on resources like Infourok or YouTube .
a=2,b=7,c=-9a equals 2 comma space b equals 7 comma space c equals negative 9 Use the formula to find the number of roots. For further practice, you can find full variants
x2=-7−112⋅2=-184=-4.5x sub 2 equals the fraction with numerator negative 7 minus 11 and denominator 2 center dot 2 end-fraction equals negative 18 over 4 end-fraction equals negative 4.5 ✅ The solutions to the equation are Visualization of the Function For further practice
Контрольная работа по алгебре за 1 полугодие, 8 класс For further practice, you can find full variants