5-x=3 Work out the value of 3x^2

1 answer:

Oxana [17]2 years ago

8 0

Answer:

Step-by-step explanation:

$5 - x = 3 \\ \\ 5 - 3 = x \\ \\ 2 = x \\ \\ x = 2 \\ \\ 3 {x}^{2} = 3 {(2)}^{2} = 3 \times 4 = 12$

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