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138 cm² = (x + 2) × ( 2x + 3) x 1/2​

User Mort
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1 Answer

7 votes

Answer:

Explanation:

138 cm² = (x + 2) × ( 2x + 3) x 1/2​

138 cm² = x + 2 × 2x + ) x 1/2​

138 cm² = x + 4x + x * 0.5

0.5/138 cm² = 6x * 0.5 /0.5

6/69cm² = 6x/6

x = 11.5

This might be wrong so just take the square root of 138.

User Hellen
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