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Popular >

expand (x+3)(x^2=7x+1)

Solution

expand

(x + 3) (x^{2} = 7 x + 1)

Solution

x^{3} = 7 x + 3

Solution steps

(x + 3) (x^{2} = 7 x + 1)

= (x + 3) (7 = x^{2} x + 1)

Apply FOIL method:

(a + b) (c + d) = a c + a d + b c + b d

a = x, b = 3, c = x^{2} = 7 x, d = 1

x x^{2} = 7 x + x \cdot 1 + 3 x^{2} = 7 x + 3 \cdot 1

x^{2} x = 7 x + 1 \cdot x + 3 x^{2} = 7 x + 3 \cdot 1

Simplify

x^{2} x = 7 x + 1 \cdot x + 3 x^{2} = 7 x + 3 \cdot 1 : x^{3} = 7 x + 3

x^{3} = 7 x + 3

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Frequently Asked Questions (FAQ)

What is expand (x+3)(x^2=7x+1) ?
The solution to expand (x+3)(x^2=7x+1) is x^3=7x+3