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A = -1 - √6

B = -1 + √6

Step-by-step explanation:

To find the 2 roots for the algebraic expression below we use Almighty formula

x² + 2x - 5

Formula = -b ± √b² - 4ac/2a

Where: ax²+ bx + c

a = 1, b = 2, c = -5

Hence:

-2 ± √2² - 4 × 1 × -5/2 × 1

-2 ± √4 + 20/2

-2 ± √24/2

Finding the roots

-2 ± √4 × 6/2

-2 ± 2√6/2

Hence

-2/2 ± 2√6/2

-1 ± √6

-1 - √6 , -1 + √6

Therefore the two roots are

Option A = -1 - √6 and Option B = -1 + √6

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step-by-step explanati∵∵∴∴on:

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²