Question

Vă rog mă ajitati este urgent...​

Answer 1

a) x²+6x=16;

x²+6x-16=0;

Δ=36+4×16=36+64=100;

x1=(-6-10)/2=-8;

x2=(-6+10)/2=2;

d) 4x²+12x=16 | :4;

x²+3x=4;

x²+3x-4=0;

Δ=9+16=25;

x1=(-3-5)/2=-4;

x2=(-3+5)/2=1;

g) x²-6x=7;

x²-6x‐7=0;

Δ=36+28=64;

x1=(6-8)/2=-1;

x2=(6+8)/2=7;