Multiply. -(5 + 4i)(6 + 9i)

question 284

Multiple Choice

Multiply.
-(5 + 4i) (6 + 9i)

• A) -6 + 69i
• B) 66 - 21i
• D) -6 - 69i

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Definitions:

Covalent Bond

The chemical bond involving shared pairs of electrons; may be single, double, or triple (with one, two, or three shared pairs of electrons, respectively). Compare with ionic bond and hydrogen bond.

OH− Concentration

A measure of the number of hydroxide ions in a solution, influencing its acidity or basicity.

pH

A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (highly acidic) to 14 (highly basic) and 7 being neutral.

Hydrochloric Acid

Hydrochloric Acid is a strong, corrosive acid found in the stomach that aids in digestion by breaking down food and killing pathogens.