Jun 19, 2018 · Let's focus on equation 1. We want to isolate x. Subtract y from both sides; x = 7 - y Substitute x = 7 - y into equation 2: xy=12; (7 - y)y ...
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Feb 8, 2024 · So, the answer of the given expression is zero.
Apr 29, 2024 · This simplifies to the quadratic equation x2−x+1=0 x 2 − x + 1 = 0 , and we can use the quadratic formula to get x=1±√1−42=1−√3i2 x = 1 ± ...
Jul 27, 2020 · Sum of variables equal 7 and product equal 12. This is relatively obvious at first sight, as 3+4=7 and 3x4=12. Don't overthink this, ...
May 7, 2021 · So, x^3+y^3 = 133.
Mar 20, 2021 · For solving this question just substitute the value of y in the given equation,. we get , x+7=10,. x=10–7=3 is the right and final answer.
Given (x + y) = 7 and xy = 12. Now, x^3 + y^3 = (x + y)^3 – 3xy(x + y) ⇒ x^3 + y^3 = (7)^3– 3(12)(7) = 343 – 252 =91 ∴ x^3 + y^3 = 91 ... Q. If x+y=12 and xy=27 ...
Jun 16, 2017 · x + y = 12 Raise both sides to the 3rd power (cube both sides) (x + y)³ = 12³ (x + y)(x + y)(x + y) = 1728 (x + y)(x² + 2xy + y²) = 1728 x³ ...
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Sep 11, 2017 · = 4 is the answer or value.