Question

value of the polynomial 7 x ki power 4 + 3 x square - 4, when x is equal - 2 is write only direct answer
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Answer 1

Given : 7x⁴  + 3x²   - 4  

To find :  Value at x  = - 2

Solution:

7x⁴  + 3x²   - 4  

x  = - 2

just put x  = - 2  

= 7(-2)⁴  + 3(-2)²  - 4

= 7(16) + 3(4) - 4

= 112 + 12 - 4

= 120

7x⁴  + 3x²   - 4  = 120  at x   = - 2

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Answer 2

$\huge{\underline{\underline{\purple{\mathscr{Question:}}}}}$

To find value of polynomial at X = -2

$\huge{\underline{\underline{\purple{\mathscr{Condition-Given:}}}}}$

By Direct Method

$\huge{\underline{\underline{\purple{\mathscr{Answer:}}}}}$

➨ $\huge{\fbox{\fbox{\bigstar{\mathfrak{\blue{120}}}}}}$

Step By Step Explanation

We have to find value at x = - 2 for the eqn ..

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

So! Here we are gonna to put value of x = - 2 in the eqn , so as to get value of x = - 2 .

➨ 7 (-2) ^4 + 3(-2) ^2 - 4

➨ 7 (16) + 3 (4) - 4

➨ 112 + 12 - 4

➨ 124 - 4

➨ 120

So! The value at x = - 2 is 120.