4x2 21 0

4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0. X2+4x-21=0. 4x2 12 0 через дискриминант. √21 − 4𝑥 = −𝑥. x2+21x-90=0.
4x2 21 0
4x2 21 0. 4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0. 4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0. 4x2 21 0
4x2 21 0
4x2 21 0. 4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0
4x2 21 0. 4x2 21 0