(6a-1)^2= (9a)((4a+2) I need help

Mathematics

1 answer:

hodyreva [135]3 years ago

5 0

36a - 1 = 36a2 + 18 a
36a - 18a - 1 = 36a2
18a - 1 = 36a2

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$\begin{aligned}a^2+b^2 & = c^2 \\\implies 4^2+4^2 & =c^2\\16+16 & =c^2\\32 & =c^2\\ \sqrt{c^2}& =\sqrt{32}\\ c & =\sqrt{16 \cdot 2}\\& = \sqrt{16}\sqrt{2}\\& =4\sqrt{2}\end{aligned}$