30 Point yaa! Please bantu :(

Jawaban:

1. x²-3x+3x-9-10x=0

x²-10x-9=0

2. 5x-10=x²-5x+3x-15

x²-2x-15-5x+10=0

x²-7x-5=0

3. 3(x²-4x+4)+75x-10=0

3x²-12x+12+75x-10=0

3x²+63x+2=0

1.(x+3)(x-3)=10x

(x.x)(3.x)(-3.x)(3.-3)=10x

x²+3x-3x-9=10x

x²-9=10x

x²-10x-9=0 (ax²+bx+c=0)

Nilai a=1,b=-10,c=-9

2.5(x-2)=(x+3)(x-5)

5(x)+(5.(-2))=(x.x)(3.x)(-5.x)(3.-5)

5x-10=x²+3x-5x-15

5x-10=x²-2x-15

5x-10-x²+2x+15=0

-x²+5x+2x-10+15=0

x²-7x+5=0 (ax²+bx+c=0)

Nilai a=1,b=-7,c=5

3.3(x-2)² + 5(15x–2)

3(x²+4) + 5(15x) + 5(-2)=0

3(x²) + 3(4) + 75x + (-10)=0

3x² + 12 + 75x – 10 =0

3x² + 75x + 12-10 =0

3x²+75x+2=0 (ax²+bx+c=0)

Nilai a=3 , b=75 , c=2

Semoga membantu^_^

jadikan jawaban yang tercerdas ya :)