З)(10x+3z)(10x-5z) решите плиз
(10x+3z)(10x-5z)=100x²+30xz-50xz-15z²=100x²-20xz-15z²=5(20x²-4xz-3z²)
10x2-50zx+30zx-15z2=10x2-15z2-20zx=5(2x2-3z2-4zx)