Investing doesn't have to be complicated. After all, low-cost exchange-traded funds (ETFs) that are passively managed have historically outperformed most professional investors and actively managed funds alike.

Below is a nuts and bolts overview of three Vanguard growth ETFs that epitomize the simple, cost-efficient approach to investing and could serve as the backbone of a well-diversified portfolio. Read on to find out more about these popular funds.

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Source Fool.com