Find the value of polynomial 2x - 3x2 + 4x -7 at x = 2.​

13

Step-by-step explanation:

Given the polynomial :

3x² + 4x -7 at x = 2.​

Substitute x = 2 into the equation :

3(2)² + 4(2) -7

3(4) + 8 - 7

12 + 8 - 7

= 13

Hence, vlaue of the polynomial at x = 2 is 13

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°

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step-by-step explanation: