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While attempting to multiply the expression (3x + 7)" a student made mistakes. Explain and write the correct way.

While attempting to multiply the expression 3x 7 a student made mistakes Explain and write the correct way class=

Respuesta :

swagaro5dude

Answer:

9x²+42x+49

Step-by-step explanation:

that is not the correct way to foil.

the correct way would be (3x+7)²= (3x+7)(3x+7)

simplifying that would give us 9x²+42x+49

his mistake was multiplying wrong because he did not foil

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