Question

Find the product of each of the following:
(a) (3x + 5y + 7)(3x + 5y + 5)​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Now,

let us simplify the given expression

➡(3x – 5y) × (x + y)

➡ (3x – 5y) × (x + y)

➡x(3x – 5y) + y (3x – 5y)

➡3x2 – 5xy + 3xy – 5y2

➡3x2 – 2xy – 5y2

Let us substitute the given values x = – 1 and y

➡ – 2, then

➡ (3x – 5y) × (x + y)

➡ [3 (-1) – 5 (-2)] × [(-1) + (-2)]

➡ (-3+10) × (-1-2)

➡ 7×-3 = -21

Now, ➡3x2 – 2xy – 5y2

➡ 3 (-1)2 – 2 (-1) (-2) – 5 (-2)2

➡3 – 4 – 20 = – 21

∴ The given expression is verified.

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$\huge\bold\red{-Mr Dangerous}$