Answer: x=−2
Step-by-step explanation:
x^3+2x^2+3x+6=0
(x+2)(x^2+3)=0
x+2=0 or x^2+3=0
x=−2
Step-by-step explanation:
x⁴+3x³-4x²=0
x²(x²+3x-4)=0
x²+3x-4=0
x²+4x-x-4=0
x(x+4)-1(x+4)=0
(x+4)(x-1)=0
x=-4 or 1
x can't be negative
therefore x=1
x+4=1+4=5
Answer:
4x^2 + 28x
Step-by-step explanation:
You use the distributive property and can say that it is equal to 4x * x + 4x * 7, which is equal to 4x^2 + 28x.
8×10^6 is your answer but make sure that the 6 is an exponent
