Math, asked by atharvavaish, 7 months ago

Simplify: 7x²(3x – 9) + 3 and find its values for x = 4 and x = 6​

Answers

Answered by anchal12jain
7

Answer:

21x³ - 63x²

(i) 21 (4)³ - 6(4)²

= 1344 - 96

= 1248

(ii) 21(6)³ - 63(6)²

=4536- 2268

=2268

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Answered by hinshaiqbal
2

Answer:

Step-by-step explanation:

7x^2(3x-9)+3

=>21x^3+3

For x=4

=>21(4)^3+3

=>21×48+3

=>1006

For x=6

=>21(6)^3+3

=>21×216+3

=>4536+3

=>4539

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