A shopkeeper notes his stock as 8x boxes of biscuits and 8x^2 packs of chips, where x is a counting unit. A helper tries to add them as 8x + 8x^2 = 16x^3. Is the helper's combining correct?

Question

Accepted Answer

No, 8x and 8x^2 are unlike terms and cannot be combined. 8x has x to power 1 and 8x^2 has x to power 2. They are unlike terms, so they cannot be added into one term. The expression stays 8x + 8x^2.

A shopkeeper notes his stock as $8 x$ boxes of biscuits and $8 x^{2}$ packs of chips, where $x$ is a counting unit.
A helper tries to add them as $8 x + 8 x^{2} = 16 x^{3}$ .
Is the helper's combining correct?

Step-by-Step Solution

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More Class 7 Like and Unlike Terms practice

A shopkeeper notes his stock as 8x boxes of biscuits and 8x2 packs of chips, where x is a counting unit.A helper tries to add them as 8x+8x2=16x3.Is the helper's combining correct?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Like and Unlike Terms practice

A shopkeeper notes his stock as $8 x$ boxes of biscuits and $8 x^{2}$ packs of chips, where $x$ is a counting unit.
A helper tries to add them as $8 x + 8 x^{2} = 16 x^{3}$ .
Is the helper's combining correct?