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Popular >

expand (1+3x)^2

Solution

expand

(1 + 3 x)^{2}

Solution

1 + 6 x + 9 x^{2}

Solution steps

(1 + 3 x)^{2}

Apply Perfect Square Formula:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

(1 + 3 x)^{2} = 1^{2} + 2 \cdot 1 \cdot 3 x + (3 x)^{2}

= 1^{2} + 2 \cdot 1 \cdot 3 x + (3 x)^{2}

Simplify

1^{2} + 2 \cdot 1 \cdot 3 x + (3 x)^{2} : 1 + 6 x + 9 x^{2}

= 1 + 6 x + 9 x^{2}

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Frequently Asked Questions (FAQ)

What is expand (1+3x)^2 ?
The solution to expand (1+3x)^2 is 1+6x+9x^2