Question

simplify the expression 3(x²-3x)-(7x-4) find the value when x =- 3​

Answer 1

Question :-

• simplify the expression 3(x²-3x)-(7x-4) find the value when x =- 3

Concept :-

• In this question, we will simplify the expression 3(x² -3x) - (7x -4) using the value of x = -3.

Solution :-

= 3 ( -3² - 3 × -3 ) - (7 × -3 - 4)

= 3 ( 9 + 9 ) - ( -21 - 4)

= 3 ( 18 ) - ( - 25 )

= 3 ( 18) + 25

= 54 + 25

= 79

Therefore,the answer when simplified and used the value of x = -3 is 79.

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