Find the values of polynomial $3 x^{3} - 4 x^{2} + 7 x - 5$ when $x = 3$ & $x = - 3$

61, - 143

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

- 61, 142

No worries! We‘ve got your back. Try BYJU‘S free classes today!

61, 142

No worries! We‘ve got your back. Try BYJU‘S free classes today!

- 61, - 142

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $61, - 143$
$f (3) = 3 \cdot 3^{3} - 4 \cdot 3^{2} + 7 \cdot 3 - 5 = 81 - 36 + 21 - 5 = 61 a n d f (- 3) = 3 \cdot (- 3)^{2} - 4 (- 3)^{2} + 7 (- 3) - 5 - 81 - 36 - 21 - 5 = - 143$

Suggest Corrections

Similar questions

3 x^{3} - 4 x^{2} + 7 x - 5

3 x^{3} - 4 x^{2} + 7 x - 5

(3 x^{3}) \times (4 x^{2}) + 7 x^{5}

x = 3

p (x) = 3 x^{3} - 4 x^{2} + 7 x + 5

(x - 3)

(x + 3)

x^{29}

(x - \frac{1}{1 \times 3}) (x - \frac{2}{1 \times 3 \times 5}) (x - \frac{3}{1 \times 3 \times 5 \times 7}) . . . . . . . . . . . . (x - \frac{30}{1 \times 3 \times . . . . . . \times 61})

Join BYJU'S Learning Program