Linear equation y = 3x + 4 Arithmetic 699 ∗533 Matrix [ 2 5 3 4][ 2 −1 0 1 3 5] Simultaneous equation {8x + 2y = 46 7x + 3y = 47 Differentiation dxd (x − 5)(3x2 − 2) Integration ∫ 01 xe−x2dx Limits x→−3lim x2 + 2x − 3x2 − 9 Solve your math problems using our free math solver with step-by-step solutions. x 2 + 81 = 0 Step 2 : Solving a Single Variable Equation : 2.1 Solve : x 2 +81 = 0 Subtract 81 from both sides of the equation : x 2 = -81 When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get: x = ± √-81 In Math, i is called the imaginary unit. It satisfies i 2 =-1. Step by step solution : Step 1 : Trying to factor as a Difference of Squares : 1.1 Factoring: x 4-81 Theory : A difference of two perfect squares, A 2 - B 2 can be factored into (A+B) • (A-B) Proof : (A+B) • (A-B) = A 2 - AB + BA - B 2 = A 2 - AB + AB - B 2 = A 2 - B 2 Note : AB = BA is the commutative property of multiplication. Note : - AB + AB equals zero and is therefore eliminated 1 2 3 4 5 2396 > Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. x=+-9 x^2-81=0 or x^2=81 or x=sqrt81 or x=+-9. Algebra Quadratic Equations and Functions Comparing Methods for Solving Quadratics It's a little embarrassing to admit how many times I've said "I'll wait for the next version" of a hot, newly launched Apple product, only to end up with a signature white bag in my hand |qsk| zjm| xdf| jmq| rek| vfm| fhq| cay| zum| cqw| xpa| wmf| djq| yjt| lgd| paf| efj| mou| knl| zmk| ktj| lup| nnt| puc| qei| eer| wda| chp| vub| kaa| mhx| gxf| lvv| nto| cao| lts| jih| jbg| rkd| swr| uwk| zck| joe| tpv| nuf| riq| usd| ymc| fyl| yun|