Question

29. Simplify-
(7x - 5) (4.x - 7) - (14x - 4) (2x - 5)​

Answer 1

Answer:

(7x-5)(4x-7)-(14x-4)(2x-5)

[7x*(4x-7)-5*(4x-7)] - [14x*(2x-5)-4*(2x-5)]

[28(x)^2-69x+35] - [28(x)^2-78x+20]

28(x)^2 -69x +35 -28(x)^2 + 78x-20

-69x+35 +78x -20

(78x-69x) +(35-20)

9x +15

Answer 2

Answer:

9x+15.

Step-by-step explanation:

First of all write the question and after that answer.

(7x-5)(4x-7)-(14x-4)(2x-5).

7x(4x-7)-5(4x-7)-{14x(2x-5)-4(2x-5)}.

28x^2-49x-20x+35-{28x^2-70x-8x+20}.

28x^2-49x-20x+35-28x^2+70x+8x-20.

28x^2-28x^2-49x-20x+70x+8x+35-20.

+28x^2 and -28x^2 will get cancel.

Remaining,

-49x-20x+70x+8x+35-20.

-69x+78x+15.

+9x+15.

HENCE, the answer is 9x+15.

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