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Popular >

simplify (7r^3)(9r^4)

Solution

simplify

(7 r^{3}) (9 r^{4})

Solution

63 r^{7}

Solution steps

(7 r^{3}) (9 r^{4})

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

r^{3} r^{4} = r^{3 + 4}

= 7 \cdot 9 r^{3 + 4}

Add the numbers:

3 + 4 = 7

= 7 \cdot 9 r^{7}

Multiply the numbers:

7 \cdot 9 = 63

= 63 r^{7}

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Frequently Asked Questions (FAQ)

What is (7r^3)(9r^4) ?
The solution to (7r^3)(9r^4) is 63r^7