Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Simplify the expression to a + bi form:

(5-6i)(-9-9i)
Answer:

Simplify the expression to a + bi form:\newline(56i)(99i) (5-6 i)(-9-9 i) \newlineAnswer:

Full solution

Q. Simplify the expression to a + bi form:\newline(56i)(99i) (5-6 i)(-9-9 i) \newlineAnswer:
  1. Apply Distributive Property: To simplify the expression (56i)(99i)(5-6i)(-9-9i), we will use the distributive property (also known as the FOIL method for binomials), which states that for any complex numbers a,b,c,a, b, c, and d,(a+bi)(c+di)=ac+adi+bci+bdi2d, (a + bi)(c + di) = ac + adi + bci + bdi^2. Let's multiply the real parts and the imaginary parts accordingly. Calculation: (5)(9)+(5)(9i)+(6i)(9)+(6i)(9i)(5)(-9) + (5)(-9i) + (-6i)(-9) + (-6i)(-9i)
  2. Calculate Real and Imaginary Parts: Now we will calculate each part separately.\newlineFirst, multiply the real parts: (5)(9)=45(5)(-9) = -45.\newlineSecond, multiply the real part of the first term by the imaginary part of the second term: (5)(9i)=45i(5)(-9i) = -45i.\newlineThird, multiply the imaginary part of the first term by the real part of the second term: (6i)(9)=54i(-6i)(-9) = 54i.\newlineFourth, multiply the imaginary parts: (6i)(9i)=54i2(-6i)(-9i) = 54i^2. Remember that i2=1i^2 = -1.
  3. Combine and Substitute: Combine the results from the previous step and substitute i2i^2 with 1-1.\newlineCalculation: 4545i+54i+54(1)-45 - 45i + 54i + 54(-1)
  4. Simplify Expression: Simplify the expression by combining like terms.\newlineCalculation: 4545i+54i54-45 - 45i + 54i - 54\newlineCombine the real parts: 4554=99-45 - 54 = -99.\newlineCombine the imaginary parts: 45i+54i=9i-45i + 54i = 9i.
  5. Final Result: Write the final result in a+bia + bi form.\newlineCalculation: 99+9i-99 + 9i

More problems from Find the roots of factored polynomials