Evaluate
\left(2x+5\right)\left(3x+1\right)
Expand
6x^{2}+17x+5
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\left(6x+6\times \frac{1}{3}\right)\left(x+\frac{5}{2}\right)
Use the distributive property to multiply 6 by x+\frac{1}{3}.
\left(6x+\frac{6}{3}\right)\left(x+\frac{5}{2}\right)
Multiply 6 and \frac{1}{3} to get \frac{6}{3}.
\left(6x+2\right)\left(x+\frac{5}{2}\right)
Divide 6 by 3 to get 2.
6x^{2}+6x\times \frac{5}{2}+2x+2\times \frac{5}{2}
Apply the distributive property by multiplying each term of 6x+2 by each term of x+\frac{5}{2}.
6x^{2}+\frac{6\times 5}{2}x+2x+2\times \frac{5}{2}
Express 6\times \frac{5}{2} as a single fraction.
6x^{2}+\frac{30}{2}x+2x+2\times \frac{5}{2}
Multiply 6 and 5 to get 30.
6x^{2}+15x+2x+2\times \frac{5}{2}
Divide 30 by 2 to get 15.
6x^{2}+17x+2\times \frac{5}{2}
Combine 15x and 2x to get 17x.
6x^{2}+17x+5
Cancel out 2 and 2.
\left(6x+6\times \frac{1}{3}\right)\left(x+\frac{5}{2}\right)
Use the distributive property to multiply 6 by x+\frac{1}{3}.
\left(6x+\frac{6}{3}\right)\left(x+\frac{5}{2}\right)
Multiply 6 and \frac{1}{3} to get \frac{6}{3}.
\left(6x+2\right)\left(x+\frac{5}{2}\right)
Divide 6 by 3 to get 2.
6x^{2}+6x\times \frac{5}{2}+2x+2\times \frac{5}{2}
Apply the distributive property by multiplying each term of 6x+2 by each term of x+\frac{5}{2}.
6x^{2}+\frac{6\times 5}{2}x+2x+2\times \frac{5}{2}
Express 6\times \frac{5}{2} as a single fraction.
6x^{2}+\frac{30}{2}x+2x+2\times \frac{5}{2}
Multiply 6 and 5 to get 30.
6x^{2}+15x+2x+2\times \frac{5}{2}
Divide 30 by 2 to get 15.
6x^{2}+17x+2\times \frac{5}{2}
Combine 15x and 2x to get 17x.
6x^{2}+17x+5
Cancel out 2 and 2.
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}