Kontrolnaia Rabota Po Algebre 8 Klass Za Pervoe Polugodie Mordkovich May 2026

D=72−4(2)(-9)cap D equals 7 squared minus 4 open paren 2 close paren open paren negative 9 close paren D=49+72=121cap D equals 49 plus 72 equals 121 , there are two real roots. Note that Calculate the roots using

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. D=72−4(2)(-9)cap D equals 7 squared minus 4 open

Construct a graph of a function (e.g., ) and determine its properties. Solving Equations Solve basic quadratic equations such as Solving Equations Solve basic quadratic equations such as

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 ) and determine its properties.

Below is a typical structured write-up of a semester 1 control test.