The expression 2x⁴ + 5x³ - 8x - 20 can be express as follows;
x³(2x + 5) - 4(2x + 5)
<h3>How to factorise an expression?</h3>
2x⁴ + 5x³ - 8x - 20
Therefore,
2x⁴ + 5x³ - 8x - 20
x³(2x + 5) - 4(2x + 5)
Hence, the expression 2x⁴ + 5x³ - 8x - 20 can be express as follows:
2x⁴ + 5x³ - 8x - 20 = x³(2x + 5) - 4(2x + 5)
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Look at the picture.
The area of the trapezoid:
The area of the rectangle:
The area of figure:
C and B is proportional relationships , because the proportional relationships always start at zero and the line must be straight !
Answer: choice B
Step-by-step explanation:
50C40
=50C10
=50!/40!*10!