Answer:
x = - 5, x = - 3
Step-by-step explanation:
Given
x² + 15 = - 8x ( add 8x to both sides )
x² + 8x + 15 = 0 ← in standard form
Consider the factors of the constant term (+ 15) which sum to give the coefficient of the x- term (+ 8)
The factors are 5 and 3, since
5 × 3 = 15 and 5 + 3= 8, thus
(x + 5)(x + 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x + 3 = 0 ⇒ x = - 3
Answer:
- 3 ≤ x < 0
Step-by-step explanation:
- 3 is included in the set thus x can equal - 3
- 3 is less than all other values in the set including the largest value of 0, thus
- 3 ≤ x < 0
Answer:
if its answer for x its
Step-by-step explanation:
=4
=8
Answer:
Compare two multi‐digit numbers based on meanings of the digits in each ... Base 10 blocks are often used in class to help students grasp number. ... Example: Fifteen is 15. ... Example: 14,009: the number name is fourteen thousand, nine ... 12 23. 4 3 2 7 2 3. 2 1 2 5 x 2 x 7 x 2 x 6 x 1 2 x 9 7. 24 161 8 6 4 4,338 4 2 1 7 5.
Step-by-step explanation:
