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Question
Multiply:
(4x + 5y) × (9x + 7y)
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Solution
(4x + 5y) × (9x + 7y)
= 4x(9x + 7y) + 5y(9x + 7y)
= 4x × 9x + 4x × 7y + 5y × 9x + 5y × 7y
= 36x2 + 28xy + 45xy + 35y2
= 36x2 + 73xy + 35y2
RELATED QUESTIONS
Express each of the following product as a monomials and verify the result in each case for x = 1:
(4x2) × (−3x) × \[\left( \frac{4}{5} x^3 \right)\]
Evaluate each of the following when x = 2, y = −1.
\[\left( \frac{3}{5} x^2 y \right) \times \left( - \frac{15}{4}x y^2 \right) \times \left( \frac{7}{9} x^2 y^2 \right)\]
xy(x3 − y3)
Find the following product: \[\left( - \frac{7}{4}a b^2 c - \frac{6}{25} a^2 c^2 \right)( - 50 a^2 b^2 c^2 )\]
Find the product −3y(xy + y2) and find its value for x = 4 and y = 5.
Multiply:
[−3d + (−7f)] by (5d + f)
Simplify:
(x3 − 2x2 + 5x − 7)(2x − 3)
Simplify:
(5x + 3)(x − 1)(3x − 2)
Multiply:
(12a + 17b) × 4c
What is the product of (x + 3) and (x − 5)?
