Evaluate $a^{3}$ x $3 a^{2}$ x $- 2 a^{7}$ for $a = 1$

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Solution

The correct option is C

Given $a^{3}$ x $3 a^{2}$ x $- 2 a^{7}$ = $- 6 a^{12}$

Substitute $a = 1$

$\Rightarrow$ $- 6 a^{12}$ = $- 6 \times 1^{12}$

= $- 6$

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Question 61

If 2A7 $\div$ A = 33, then find the value of A.

Question 61

If 2A7 $\div$ A = 33, then find the value of A.

3 a (a - b) + b (a + b)

a = 1

b = - 1