Question Video: Writing Algebraic Expressions Mathematics • First Year of Preparatory School

Video Transcript

Express the following in algebraic form: the square of a number 𝑘 which is then multiplied by 19.

In this question, our variable is the letter 𝑘. We’re asked to square this, which is written as 𝑘 to the power of two. Our exponent of 𝑘 is two. We then need to multiply 𝑘 squared by 19. In its simplified form, this is written 19𝑘 squared. When writing the product of a constant and a variable, we always write the constant first. The square of a number 𝑘 which is then multiplied by 19, in algebraic form, is 19𝑘 squared.