Which of the following statements demonstrates the identity property of multiplication?

9 ∙ (2 ∙ 7) = (9 ∙ 2) ∙ 7
(-4)(1) = -4
7 ∙ -8 = -8 ∙ 7
-5(18) = -5(20 - 2)

6hryt%4578855

mk./km: lm

step-by-step explanation:

,mlmlm

; mk

lk

600,000,000,000, or 6e14

step-by-step explanation:

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629