Choose the number sentence that illustrates the distributive property of multiplication over addition. 3 × (7 + 2) = (3 + 7) × (3 + 2)

3 × (7 + 2) = (3 × 7) + 2

3 × (7 + 2) = (3 × 7) + (3 × 2)

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x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

80

step-by-step explanation:

sorry i got nothing

step-by-step explanation: