tomsmithnp44 tomsmithnp44

07-07-2020
Mathematics

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lucasella lucasella

07-07-2020

Answer:

x=1.8 cm

Step-by-step explanation:

(2x)²+(x+3)²=(2x+2.4)²

4x²+x²+6x+9=4x²+9.6x+5.76

5x²+6x+9-4x²-9.6x-5.76=0

x²-3.6x+3.24=0

(x-1.8) ²=0

x-1.8=0 => x=1.8 cm

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