Expand (x − 4)(2x + 5)
Worked out line by line the way a teacher would write it.
Answer
| Expanded form | 2x² − 3x − 20 |
Step-by-step solution
3 steps-
1 Given\left(x - 4\right) \left(2 x + 5\right)
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2 Multiply the binomials (FOIL: First, Outer, Inner, Last)
To multiply two binomials, multiply every term of one by every term of the other: the First terms, the Outer terms, the Inner terms and the Last terms, four products in all.
\left(x \cdot 2 x + x \cdot 5 + (-4) \cdot 2 x + (-4) \cdot 5\right) -
3 Multiply out and combine like terms2 x^{2} - 3 x - 20
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