If x = -2, y= 5, and z= 3, evaluate the following expression. x^4 - 5y + 2(x - z)^2 .

91

Step-by-step explanation:

-2^4 - 5 x 5 + 2( -2 - 3)²

16 - 25 + 2(-5)²

-9 + -10²

-9 + 100

91

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1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.