Answer:
x=7 so we could make an expression like; 2x=14
The first and second triangle. I am pretty sure
Step-by-step explanation:
x=7
(x-7)=0
x=0
x=3
(x-3)=0
x=-2
(x+2)=0
x(x+2)(x-3)(x-7)
x(x+2)(x²-7x-3x+21)
(x²+2x)(x²-10x+21)
x⁴-10x³+21x²+2x³-20x²+42x
x⁴-8x³+z²+42x