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What is the product of c and 9 in algebraic expression?
It is simply: 9c which means 9 times c
What is a requirement for a trinomial to be factored as a perfect square?
A perfect square is a binomial squared, like (x+3)^2. You would calculate this by remembering: Square the first, twice the product, square the last. So x^2 (square the first), plus 6x (twice the product), plus 9 (square the last), so we get x^2+6x+9. We can factor this in reverse to see that this is a perfect square. With this simple trick, you can solve for perfect squares.
What two digit number is twice the product of its digits?
362x(3x6)
What is the product of c 8 and c-5?
(c + 8)(c - 8)= c^2 - 64
X 2-4x-45 what's the factor answer?
The general expression for a quadratic polynomial is: ax2 + bx + cComparing x2 - 4x - 45 with general expression we geta = 1, b = -4 and c = -45Multiplying a and c: ac = -45Now break down b in two numbers in such a way that sum of the numbers is -4 and product is equal to -45, product of a and c.The two numbers are -9 and 5. Since sum of -9 and 5 is -4 and the product is -45.So in place of -4x we can write -9x + 5x.The expression now becomes: x2 - 9x + 5x - 45x(x - 9) + 5(x - 9)(x + 5)(x - 9)So factors are (x + 5) and (x - 9).Note: The middle term is split into two terms so that there are in total four terms in the expression and the product of extreme terms is equal to product of middle terms.
