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solve the following equation: x^2 - 7x -15 = 3

Rearrange the equation so x^2 - 7x -18 = 0, then simplify into (x-9)(x+2)=0 -> x=9 or x=-2
JS
Answered by James S. • Maths tutor
3294 Views

Identify two ways in which men may exploit and/or oppress women within families.

Radical feminists state that family life reflects patriarchy and would therefore argue the following two ways in which women are oppressed/exploited by men within their families. Firstly, being subjected to ...
JL
Answered by Jasmine L. • Sociology tutor
19322 Views

State the trigonometric identities for sin2x, cos2x and tan2x

sin2x = 2sinxcosx cos2x = cos^2(x) - sin^2(x) tan2x = (2tanx)/(1-tan^2(x))
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Answered by James S. • Maths tutor
21190 Views

Describe how smoking damages the lungs

Smoke contains contents that can irritate the respiratory tract, which can lead to inflammation of the Bronchi. This is termed Bronchitis. Cilia may be damaged by tar, leaving them immobile, which means that...
HO
Answered by Hayley O. • Biology tutor
12761 Views

Expand and Simplify: 2y(3x - 8) + x(2x + y)

Start by expanding the brackets. This means that you must multiply everything inside the bracket by whatever is outside the bracket. Therefore, you should be left with: 6yx - 16y + 2x^2 + xy After this, you ...
JB
Answered by Jasmine B. • Maths tutor
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