Graph the line using the slope and the y-intercept, or the points. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

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2015年8月31日 · How do you find the binomial expansion of (x + y)7? Use the Binomial Theorem and Pascal's triangle to find: (x +y)7. = x7 +7x6y + 21x5y2 + 35x4y3 +35x3y4 +21x2y5 +7xy6 + y7. The Binomial Theorem tells us: (x +y)N = N ∑ n=0(N n)xN −nyn. where (N n) = N! n!(N −n)! So in our case: (x +y)7 = (7 0)x7 + (7 1)x6y +... + (7 6)xy6 +(7 7)y7.

x^{2}-x-6=0 -x+3\gt 2x+1 ; line\:(1,\:2),\:(3,\:1) f(x)=x^3 ; prove\:\tan^2(x)-\sin^2(x)=\tan^2(x)\sin^2(x) \frac{d}{dx}(\frac{3x+9}{2-x}) (\sin^2(\theta))' \sin(120)

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1.1 Solve x-y-7 = 0. Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK). "y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

To solve a system of equations by elimination, write the system of equations in standard form: ax + by = c, and multiply one or both of the equations by a constant so that the coefficients of one of the variables are opposite. Then, add or subtract the …