Distribute all the negatives: 7a-9c+12a+33c+21a-10c
simplify:
40a+14c
Answer:
i tried the math and if im correct it should be 0.52N
Step-by-step explanation:
im sorry if its not correct bro
Answer:
x²(9x– 11)(9x + 11)
Step-by-step explanation:
81x⁴ – 121x²
The expression can be factorised as follow:
81x⁴ – 121x²
x² is common to both term. Thus:
81x⁴ – 121x² = x²(81x² – 121)
Recall:
81 = 9²
121 = 11²
Therefore,
x²(81x² – 121) = x²(9²x² – 11²)
= x²[(9x)² – 11²]
Difference of two squares
x²(9x– 11)(9x + 11)
Therefore,
81x⁴ – 121x² = x²(9x– 11)(9x + 11)
Answer:
it's the first option
Step-by-step explanation:
hope that help you
