Question

(x-5)*(x-2)=0 и 16x+x+3x-5x+14=299

Answer 1

$1) (x-5)*(x-2)=0 \ x^{2} -2x-5x+10=0 \ D= 49-40 = 3^{2} \ x_{1,2} = frac{7+-3}{2} \ x1=5 \ x2=2 \ 2) 16x+x+3x-5x+14=299 \ 15x=285 \ x=19$