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Easy

Question

Write the product in standard form. (𝑥 − 4)(𝑥 + 4)

The correct answer is: 16


    (𝑥 − 4)(𝑥 + 4) = 𝑥(𝑥 + 4) − 4(𝑥 + 4)
    =  𝑥(𝑥) + 𝑥(4) - 4(𝑥) - 4(4)
    = 𝑥2 + 4𝑥 - 4𝑥 - 16
    = 𝑥2 - 16
    Final Answer:
    Hence, the simplified form of (𝑥 − 4)(𝑥 + 4) is 𝑥2 - 16
     

    This question can be easily solved by using the formula
    (a + b)(a - b) = a2 - b2

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