Question

find and correct the errors : (a) 2x+3y=5xy ( b)( 3x+ 2)^2=3x ^2+6x +4 ( c) 4(x -5) = 4x -5 ​

Answer 1

Answer:

a) 2x + 3y ≠ 5xy

⇒ 2x x 3y = 6xy

b) (3x +2)2 ≠ (3x)2 + 6x + 4

⇒ (3x + 2)2 = 6x + 4

c) 4(x - 5) ≠ 4x - 5

⇒ 4x - 20

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Answer 2

Answer:

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Step-by-step explanation:

$(a) \: 2x + 3y = 5xy \\ 2x \times \frac{5y}{2} = 5xy$

$(b) \: (3x + 2)^{2} = {3}^{2} + 6x + 4 \\(3x + 2)^{2} =9x^{2} + 2(3x \times 2) + 4 \\ = 9x^{2} +12x + 4$

$(c) \: 4(x - 5) = 4x - 5 \\ 4(x - 5) =4x - 20$

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