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Mustafa was asked whether the following equation is an identity:

HELP MATES HELP Mustafa Was Asked Whether The Following Equation Is An Identity class=
HELP MATES HELP Mustafa Was Asked Whether The Following Equation Is An Identity class=

Sagot :

1055666

Answer: Mustafa is incorrect. He made a mistake in step 2.

Step-by-step explanation: Mustafa was certainly correct in step 1 that x(9x+3) + 3(x+3) is 9x^2 + 6x + 9. However when he was factoring, he made a mistake.

(3x + 3)^2 is NOT equal to 9x^2 + 6x + 9. Rather, (3x + 3)^2 is equal to 9x^2 + 18x + 9. If you want to double check this, use FOIL.

The correct factoring of 9x^2 + 6x + 9 is actually 3(3x^2 + 2x + 3). So, Mustafa made a mistake in step 2.

Answer:

Incorrect,made mistake in step 2

Step-by-step explanation:

  • 9x²+6x+9 is correct

But factor it

  • (3x)²+2(3x)(1)+1²+8
  • (3x+1)²+8

It can't result (3x+3)² so she is wrong

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